▁authority ▁may ▁enter ▁any ▁prem ise ▁without ▁a ▁court ▁order ▁to ▁investigate ▁under ▁the ▁priv acy ▁law ▁ ▁Ext ensive ▁inter ception ▁of ▁communic ations ; ▁and ▁use ▁of ▁bugs ▁on ▁computers ▁to ▁monitor ▁activity ▁and ▁ke yst ro kes ; ▁and ▁plans ▁are ▁in ▁place ▁to ▁minim ise ▁notification ▁ ▁Police ▁require ▁list ▁of ▁all ▁active ▁mobile ▁ph ones ▁near ▁the ▁scene ▁of ▁a ▁crime ▁ ▁DNA ▁samples ▁may ▁be ▁required ▁from ▁applic ants ▁for ▁res iden cy ▁based ▁on ▁family ▁t ies ▁ ▁Im plement ed ▁ret ention ▁of ▁communic ations ▁data ▁well ▁before ▁EU ▁mand ate , ▁for ▁one ▁year ▁ ▁Police ▁took ▁the ▁DNA ▁of ▁ 3 0 0 ▁youth ▁protest ors ▁in ▁ 2 0 0 7 ▁ ▁Im plement ing ▁air ▁travel ▁surve ill ance ▁program ▁ ▁Parliament ▁is ▁over - ke en ▁to ▁implement ▁surve ill ance ▁programs ▁ ▁Rat ified ▁Cy ber cr ime ▁convention ▁ ▁These ▁issues ▁have ▁cause ▁Den mark ▁to ▁receive ▁a ▁very ▁low ▁rating ▁on ▁their ▁Priv acy ▁index , ▁a ▁ 2 . 0 ▁( Ext ensive ▁surve ill ance ▁soci eties ) ▁compared ▁to ▁a ▁ 2 . 5 ▁in ▁ 2 0 0 6 ▁( System ic ▁failure ▁to ▁u ph old ▁saf egu ards ). ▁This ▁places ▁Den mark ▁on ▁a ▁ 3 4 th ▁place ▁of ▁the ▁ 4 5 ▁included ▁count ies ▁in ▁the ▁study ▁( although ▁United ▁States ▁and ▁United ▁Kingdom ▁are ▁placed ▁on ▁ 4 0 th ▁and ▁ 4 3 rd ▁place