Perhaps a further password would be required, or, at any rate, some proof of identity.
( ( ( ( ( ( Perhaps ( ( a ( further password ) ) ( would ( be required ) ) ) ) , ) or ) , ) ( ( at ( any rate ) ) ( , ( ( some proof ) ( of identity ) ) ) ) ) . )
(ROOT (S (S (ADVP (RB Perhaps)) (NP (DT a) (JJ further) (NN password)) (VP (MD would) (VP (VB be) (VP (VBN required))))) (, ,) (CC or) (, ,) (S (PP (IN at) (NP (DT any) (NN rate))) (, ,) (NP (NP (DT some) (NN proof)) (PP (IN of) (NP (NN identity))))) (. .)))
Passwords are unnecessary as they waste additional time.
( Passwords ( ( are ( unnecessary ( as ( they ( waste ( additional time ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Passwords)) (VP (VBP are) (ADJP (JJ unnecessary) (SBAR (IN as) (S (NP (PRP they)) (VP (VB waste) (NP (JJ additional) (NN time))))))) (. .)))