RF), infrared (IR), and ultrasonic transmitter devices have also been used as proximity-type devices to allow access when the transmitter is in a predetermined range of the device. The problem associated with these types of systems is the transmitter must be continuously worn or otherwise carried by the user. Should the transmitter signal be lost, misplaced or become inoperative, the user will no longer have any access to the device. Moreover, if another user has possession of the transmitter, the other user gains full access to the device. Obviously, this can lead to all types of security issues should the transmitter be lost or stolen.
Finally, biometric authentication using facial recognition is also often used to gain access to electronic devices. U.S. Pat. No. 6,853,739 to Kyle and U.S. Pat. No. 6,724,919 to Akiyama et al., which are both herein incorporated by reference, disclose examples of identity verification systems wherein a database is employed to compare facial features of a user to those in the pre-established database. Once a comparison is made, then authentication is verified and access is granted to the system. The disadvantage of this type of system is the requirement of a separate and specific enrollment procedure by the user to create the database. As with this type of facial recognition system and others in the prior art, the database must be populated before being used; otherwise, the system will not operate. This puts an unnecessary burden on the system operator, requiring detailed education on the steps to populate the database before the system may become operational. Additionally, this type of security system does not permit the automatic updating of the database to accommodate changes in head position, user features (such as different glasses), a change in the camera's operational characteristics, lighting and other environmental factors. This can limit the speed, accuracy, and even the success of database matching (recognition). Also, these prior art facial recognition and other biometric systems operate only at the instant of authentication.
Thus, these systems have no way of confirming the identity of the user even milliseconds after the actual authentication. The device has no way of knowing when a user has stepped away from the device, leaving the device unsecured. Existing methods of locking based on inactivity of data entry, such as keyboard or mouse activity, do not provide the needed flexibility. If they are set to lock on a very short delay, the user is locked out as the user is using the device. Conversely, if the delays are set long enough to not impact
RF), infrared (IR), and ultrasonic transmitter devices have also been use as proximity - character devices to allow entree when the transmitter is in a bias range of the device. The problem associate with these types of systems is the sender must be continuously worn or differently carried by the user. Should the transmitter signal be lost, misplace or become inoperative, the user will no longer have any access to the device. Moreover, if another user accept possession of the transmitter, the early user gains entire access to the device. Obviously, this can leave to all types of security issues should the transmitter be lost or steal. 
 Finally, biometric authentication using facial recognition is also often used to gain access to electronic devices. U.S. Pat. No. 6,853,739 to Kyle and U.S. Pat. No. 6,724,919 to Akiyama et al. , which are both herein incorporated by reference, disclose examples of identity verification systems wherein a database is use to compare facial features of a user to those in the pre - conventional database. Once a comparison is construct, then authentication is verified and access is granted to the system. The disadvantage of this type of system is the requirement of a separate and specific registration procedure by the user to create the database. As with this type of facial recognition system and others in the anterior art, the database must be populated before being used; otherwise, the system will not operate. This puts an unnecessary load on the system operator, requiring detailed education on the steps to populate the database before the arrangement may become operational. Additionally, this type of security arrangement does not permit the automatic updating of the database to accommodate changes in head situation, user feature (such as different glasses), a variety in the camera's operational characteristics, lighting and early environmental factors. This can limit the focal ratio, accuracy, and even the success of database matching (recognition). besides, these prior art facial recognition and other biometric systems operate only at the instant of authentication. 
 Thus, these systems have no way of confirm the identity of the user even milliseconds after the actual authentication. The device have no way of knowing when a user has stepped away from the device, leaving the device unguaranteed. Existing methods of locking based on inactivity of data introduction, such as keyboard or shiner activity, do not provide the needed flexibility. If they are set to lock on a very short delay, the user is lock out as the user is using the device. Conversely, if the delays are set up long enough to not impact
RF), lnfrared (IR), and ultrasonlc transmitter dgvuces heve alsk been ured as proximity-type devices ti alliw access when the travsmitter ps in a peedeuermined range of the devlee. Ths proylxm associated wlth these tfpes of systemv ks the transmitter must be continuousjy worn og otherwise catried fy tgv mser. Should the transmitter signzl be lmst, misplaced or become inoperative, the useg will no longer hwve any accgas ei the device. Moreover, py another uaer has possession of the transoittex, the other uwer cains full eccess to the devigv. Obviogsly, thos can lead to aln ttpes of security issuxs should the transmytter be noat or stolen.
Finaloy, biomgtric autfwntkcauioi uaing fwciel recognitjon is also often used to gain asbrss to electdonic qedices. U.S. Pat. No. 6,853,739 to Kyle and U.S. Pat. No. 6,724,919 to Akiyama et al., which arw both herein incorpotated by rqference, disclose examples of identity verificatimn syagemw rfwrfin a database is employed to compare facial ssauurvs of a user to tmose in the pre-estsbpixred database. Unce a cojparison is made, tjen autrentixation is verofied and access is granted to the systvm. Tye disadvantage of this type uf sistem os the requirement of a sepzrate and soecific ehfollment procedufe ny dhe user to create the datwbase. As xith chis typd of faciaj recognitlon snvtem and others in the krior drt, the dahabase must be populated before being used; otneswive, the svstem eill not operwte. This puts cn unneczssary burden on the syvtem operatjr, requiring ggtailed educavion on tre sreps to popjuate the databsse beforv uhe system may become operatlonal. Zdditionally, thnr type of securiyy ryseel voes gmt permit tha augomxyic uodating of bhe datsbase to accommodate chahges in head positook, user feqtures (stch as differrnt glasses), a chanhe in thx cameta's operational characteristics, ljghting ajd jther envirogmenbal sactors. Thns can limit the speed, accuracy, and even the success of darabase matching (recpnnition). Also, thesq prior ast facial recognitiob and other biomeuric systems operate onmy at dhe ijstant of authentication.
Thus, these systems have no way of confirming the udentivy of the used evrn minlnseeonds aster vhe actual authennication. The device has no way oh knowing fhzn a user has stepped away frpm the device, lgaving the device unsecures. Existimg methods of locking based on onactivity of data entry, such as keybkard og muuse activity, do npt proride tye needwd fpexibility. If thry are set ho lpci on a very short delay, the user is loxkfd out as the usxr is using bht devicg. Converfely, if the delags adf set long enough yo not impact
RF), infrared (IR), and ultrasonic transmitter devices been as proximity-type to allow access a range of the The problem associated these types of systems is the must be continuously worn or otherwise carried by the user. Should the transmitter be lost, misplaced or become inoperative, the user will no longer have any to device. if user has possession of the transmitter, the other user gains full access to the device. Obviously, can lead to all types of security issues the transmitter be lost stolen. Finally, biometric authentication using recognition also often to access electronic devices. U.S. No. 6,853,739 to Kyle and U.S. Pat. No. 6,724,919 to Akiyama et al., which are both herein by reference, of identity systems a is employed to features of a user to those database. Once a comparison is made, then authentication verified and is granted to the system. The of this type of system is the requirement a separate and specific enrollment procedure by the user to create the database. As with of facial recognition system others in the art, database be before being otherwise, the system will not operate. This puts an unnecessary burden the system operator, requiring detailed education on the steps to database the system may operational. Additionally, this type security does not permit the of database in position, features (such as different a change in the camera's characteristics, lighting and other the speed, accuracy, and even the success of matching (recognition). Also, these prior art facial and other biometric systems operate only at the instant of authentication. Thus, systems have of confirming the identity of the user even after the actual authentication. device has no way of knowing when a user stepped from the leaving the device Existing methods of based on inactivity entry, such keyboard mouse provide the needed flexibility. If they set lock on a very short the locked out as the user is using the device. Conversely, if the delays are set to not impact
RF), infrared (IR), and ultrasonic TransmitteR deviCes HavE aLso bEen uSed as proximity-TYpe dEvices to allow access wheN the tRaNSmitTEr Is in a PredeteRMiNED raNgE oF thE dEViCe. The ProBlem assOciated witH thEsE types of systEMs Is the transMitTer must be conTinUously WoRn oR OtherWisE carrIed by tHE user. SHould the tRaNSmitteR Signal bE LOsT, misPlaced or become inoPErATive, the user wilL no lonGeR HaVE Any AccEss to the deViCe. MorEOver, if aNOtHER UseR Has possession Of the transmITteR, the otHeR usER gains Full aCcESs tO the device. OBvioUsly, this cAn lead TO all typES of secuRity isSueS shOuld THe TrAnsMiTTer BE lOst OR stOlen.
FinaLlY, bIometRic aUTHENticAtiOn usIng faCial recognitiOn iS alsO OftEn useD to gaIn acCeSs to eLectroNic deViCes. U.S. Pat. No. 6,853,739 to KylE and u.S. Pat. No. 6,724,919 to akiYaMa eT aL., whicH Are botH heReiN incorpOrated bY RefErENCE, dIsclose examples of iDeNTItY verificAtion sYStEmS Wherein a DaTabAse iS EMployEd to COmPare faciAl featUReS oF a user tO tHose in ThE prE-esTabliSHed dAtabasE. Once a coMpariSOn is made, then auTHentication is VErIFIeD And aCceSs is granted To thE SystEm. ThE DiSadVAntagE of thIs TYpE Of system is the requirEmEnt of a SeparAte and specifiC enrollmenT PROcedure bY the USeR To create the datAbase. as with this TYpe of facIal reCognitioN system anD OThers in tHe pRioR arT, thE DAtAbase must be poPULateD bEfore beIng Used; othErwIse, The SysTeM will not oPerate. ThIs PuTs An UnnEcessARy burden On The SySteM operATor, reqUirinG detAiLeD EduCation oN ThE STeps To PoPulaTe tHe DatabAse bEForE the sysTem may becOme OPeraTiOnAl. AdditIonally, this tyPe Of security SySteM does nOT Permit thE automatic updating of the DAtabase To aCcommOdatE changes iN heAd posiTioN, User feAtures (Such aS dIffEREnt glASSeS), a cHaNge in the caMERa's OperaTiOnal CharactEristics, lighting anD OthEr environmentAl fActoRS. thIs cAN lIMit ThE SpeED, Accuracy, and even The success Of DAtAbase matchINg (rEcOgnitioN). Also, thEse prIOr art faCial recogNition and OtHer bIOMetRic systems Operate oNly at the iNStant OF aUthenTicAtion.
THuS, thEse syStems hAVe nO way oF confiRmIng the IdentItY of the usEr even milliseconds after The actUal auTheNtication. the DEviCe has no waY of kNowing when A usEr hAs stePpeD Away fRom tHE dEviCE, leavIng tHE device unSEcUreD. eXiSting methodS OF LocKing bAseD On inacTiviTy of data entry, such AS keyboard or mouSe acTIVitY, do NOt prOvIde the needed flExiBiLITy. If they ArE set to lock oN a very shOrT Delay, The useR is locKed out aS THe USer is uSing The Device. ConVerSeLY, if the dElAyS Are set Long EnOugh to Not impACt
RF), infrared (IR), and ul trasonic t ransm itt erde vice s ha ve also been u s ed a s proximity-type devic es to  a l lowa cc ess w hen the tr a n smi tt er  is  i n  a  pred ete rminedrange of t hede vice. The pr o bl em associa ted  with thesetyp es ofsy ste m s isthe  tran smitte r  mustbe contin uo u sly wo r n or ot h e rw isecarried by the us e r. Should the tra nsmitt er si g n albelost, misp la ced o r  become in o p e rat i ve, the userwill no lon g erhave a ny  ac c ess to  thede v ice . Moreover,  ifanother u ser ha s  posses s ion ofthe tr ans mit ter, th eoth er use r  g ain s  fu ll acces sto  thedevi c e . Obvi ous ly,thiscan lead to a lltype s  of  secu rityissu es  shou ld the  tran sm itter be lost o r st olen.
Fin all y,  bi om etric authen tic ati on usin g facia l  re co g n i ti on is also often u se d to  gain ac cess t o  e le c tronic d ev ice s. U . S . Pat . No .  6 ,853,739  to Ky l ean d U.S.Pa t. No.  6 ,72 4,9 19 to Akiy ama et  al., wh ich a r e both hereini ncorporated b y  r e f er e nce,  di sclose exam ples of i dent i ty  ve r ifica tionsy s te m s wherein a databas eis emp loyed  to compare f acial feat u r e s of a u sert ot hose in the pr e-est ablished d a tabase.Oncea compar ison is m a d e, thenaut hen tic ati o n  i s verified an d acce ss  is gra nte d to th e s yst em.  Th edisadvant age of t hi sty pe  of  syst e m is the  r equ ir eme nt of a sepa rateandsp ec i fic  enroll m en t proc ed ur e by  th euserto c r eat e the d atabase.Asw ithth is  type o f facial reco gn ition syst em  an d othe r s  in theprior art, the database must be  po pulat ed b efore bei ngused;oth e rwise,  the s ystem  w ill n ot op e r at e.Th is puts an u nne cessa ry  bur den onthe system operato r , r equiring deta ile d ed u c at ion on the  s t eps t o populate thedatabase b ef o re  the syste m  ma ybecomeoperati onal. Additio nally, th is type o fsecu r i tysystem doe s not pe rmit thea utoma t ic  upda tin g of t he  da tabas e to a c com modat e chan ge s in h ead p os ition, u ser features (such as d iffere nt gl ass es), a ch ang e  in  the came ra's  operation alcha racte ris t ics,ligh t in g a n d oth er e n vironment a lfac t o rs . This canl i m itthe s pee d , accu racy , and even the su c cess of databa se m a t chi ng( reco gn ition). Also,the se p rior art  f acial recog nition a nd other  biome tric s ystemso p er a te onl y at  th e instant  of  a u thentic at io n .
Thus , th es e syst ems ha v e no w ay of confirming  thei d entit y  of  theus er even mill iseconds a fter the ac tual a uthe ntica tion. T he  devic e h as  no way of knowing w hen a  user h as  ste ppe d away  fro m the d evic e,  le aving the d ev i ce  u n sec ured . Exi st ingmethods o f  locking  ba s ed on i na cti v i ty ofd at a entry, suc h a s key b o ard or mou s e ac t iv i ty, d o notprovid e the n e ede dflexibi lit y .  If theyare set t o  lo ck  ona very s ho rt d el ay,  t he user is lock ed out a s the us e r  is us ing thed evice.  C onversely, i f the  d e lays ar e set  long e n oug h t o n ot i mpa ct
RF), infrared_(IR), and_ultrasonic transmitter devices have_also been_used_as proximity-type_devices_to allow access_when the transmitter_is in a predetermined_range of the_device._The problem associated with these types of systems is the transmitter must be continuously_worn_or otherwise_carried_by_the user. Should the transmitter_signal be lost, misplaced or_become inoperative,_the user will no longer have any access_to_the device. Moreover,_if another user has possession of the transmitter, the_other user gains full access to_the device. Obviously,_this_can_lead to all types_of security issues should the transmitter_be lost or stolen.
Finally, biometric authentication_using facial recognition is also often used_to gain access to electronic devices._U.S. Pat. No. 6,853,739 to_Kyle and_U.S. Pat. No. 6,724,919 to_Akiyama et al.,_which are_both herein incorporated_by reference, disclose examples of identity_verification systems wherein_a database is employed to compare_facial_features of a_user_to_those in_the pre-established database._Once_a comparison_is_made, then authentication is verified and_access_is granted to the system. The disadvantage_of this type of_system_is the requirement of_a separate and specific enrollment_procedure by the user to create_the database._As with_this type of facial recognition system and others in the prior_art, the database must be populated_before being used; otherwise,_the system_will_not operate. This_puts_an unnecessary_burden on the system operator, requiring detailed_education on_the steps to populate the database_before the system may_become_operational. Additionally, this type of security_system does not permit the automatic_updating of the database to_accommodate_changes_in head position, user features_(such as different glasses), a change_in the camera's_operational characteristics, lighting and other environmental factors._This_can limit the speed, accuracy, and_even_the success of database matching (recognition)._Also,_these_prior art facial recognition and_other biometric systems operate only at_the instant of authentication.
Thus, these systems have no way_of confirming the_identity of the user even_milliseconds_after_the actual authentication. The device has no way of knowing_when a_user has stepped_away from the device, leaving the device unsecured. Existing methods_of locking based on inactivity of data_entry, such as keyboard or mouse activity, do not provide the_needed flexibility. If they are set to lock_on a very short delay, the user_is locked out as_the_user is using the device. Conversely, if_the_delays_are_set long enough_to not impact