The best replacement for passbook is atm.

The best alternatives to passbook are rated as following:
★★★★★  atm
★★★★  passport
★★★  keyring
★★★  google wallet
★★  statement savings
★  passport card
★  cardstar
★  lemon wallet

Your alternative for passbook is not listed? Suggest!
Speaking about passbook, one probably shouldn't forget about fandango.

Other search terms related to passbook and their ratings are:
★★★★★ fandango
★★★ ticketmaster
★★★ atm bpi
★★★ delta
★ american airlines
★ boarding pass
You have in mind a companion for passbook and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of passbook in all years. Click on graph for more.
passbook
atm
passport