To OP, glaucon makes a good point. The "fight" can be done by informing neighbors of the issues with this dumb solution, e.g. a company tracking your comings and goings, and how secure are their servers, what if an evil bigcorp buys them, etc...
One benefit would be less need to change locks when someone loses a key, but since OP says they already use keyfobs, that's not a new benefit.