[fighterpilot]

Probably by the time you've opened two you're reminded about the purpose of the bags in the first place which might serve as an autopilot interrupt

[vchynarov]

Yes, autopilot interrupt, and initially as a shame factor - shaming myself not to go through with it and stick out the rest of the day phone-free. However, now this is more of a mental block since once I decide to have a phone-free day the bags are mainly symbolic.