Smart Locks - locking tenants out instantly (tech vs legality?)

[Anne T.]

Ok, full disclosure here -- I am a part time Realtor, part time novice investor, and full time Tech nerd. For my day job, I develop test equipment and solve people's network and wifi problems. So, just wanted to put that out there. :)

This past week, I attended the International Security Conference and Expo (as an exhibitor). It happened that I was next to the Assa Abloy booth. For those of you who don't know, Assa Abloy is a high-end door lock manufacturer.

They were showcasing their new Smart Locks. The system allows you to enable and disable door access remotely. The tenant (or hotel guest) uses a key fob. Let's say the tenant doesn't pay their rent on time, you can restrict access to, for example, the Fitness room, main door, or their apartment. 

I am curious as to what tenant's rights' issues this might pose, and if it might be mitigated/circumvented if it is detailed in the lease. I realize this is likely state/county/town specific, but I was wondering if

• anyone has used a similar system
• you are aware of specific laws in your area that would be relevant