Mobile everything, originally uploaded by It’s a mobile world.

The three things no one leaves at home are the wallet (some kind of id, money), the keys, and the mobile phone. (See Chipchase et al (2005) Mobile Essentials)

In my new apartment we have a RFID card that opens all the doors, from the apartment one to the mailbox. Hanging from my mobile phone (together with a lego brick =) it’s one thing less to remember.

How mobile phones can start having this other functionality so we only need one device when leaving home? Mobile payment as the japanese suica? some kind of personal id combined with biometrics as fingerprint? RFID keys integrated on the device for opening the apartment or using public transportation? Which kind of security problems arise? How more traumatic the loss of the mobile device would be?