) ▁of ▁a ▁district ▁( K re is ) ▁to ▁co - oper ate ▁on ▁certain ▁matters , ▁e . g . ▁planning , ▁san itation ▁or ▁education . ▁ ▁The ▁Main burg ▁partners hip ▁is ▁composed ▁of ▁the ▁following ▁municipal ities : ▁A ig ls bach , ▁ 1 , 6 4 7 ▁residents , ▁ 3 9 . 9 7 ▁km ² ▁Att en hof en , ▁ 1 , 3 6 0 ▁residents , ▁ 3 1 . 4 8 ▁km ² ▁El send orf , ▁ 2 , 0 4 9 ▁residents , ▁ 3 2 . 6 6 ▁km ² ▁Volk ensch wand , ▁ 1 , 6 1 6 ▁residents , ▁ 2 9 . 2 4 ▁km ² ▁ ▁The ▁partners hip ▁is ▁based ▁in ▁Main burg , ▁although ▁the ▁town ▁itself ▁is ▁not ▁a ▁member ▁of ▁the ▁partners hip . ▁ ▁Category : K el heim ▁( d istrict ) <0x0A> </s> ▁Pass Map ▁ ▁is ▁a ▁map - based ▁graph ical ▁password ▁method ▁of ▁authentication , ▁similar ▁to ▁passwords , ▁proposed ▁by ▁National ▁T sing ▁H ua ▁University ▁research ers . ▁The ▁word ▁Pass Map ▁origin ates ▁from ▁the ▁word ▁password ▁by ▁subst itut ing ▁word ▁with ▁map . ▁ ▁History ▁and ▁usage ▁Pass Map ▁was ▁proposed ▁by ▁National ▁T sing ▁H ua ▁University ▁research ers ▁Hung - Min ▁Sun , ▁Y ao - H sin ▁Chen , ▁Chi ung - Ch eng ▁F ang , ▁and ▁Sh ih - Y ing ▁Ch ang