These aren't necessarily the same thing. When I was looking for a rental house about 6 months ago, essentially all of the homes I visited were set up with a "sm

These aren't necessarily the same thing. When I was looking for a rental house about 6 months ago, essentially all of the homes I visited were set up with a "smart lockbox". You had to set up an account with a 3rd party service who required a picture of a photo id and a small fee ($5 for 30 days access, IIRC). The rental listings would ultimately link to the 3rd party service where you could schedule a visit to the house, then get a temporary code to access the key when you arrived. All of the homes still used traditional physical locks. I'm not a fan of "smart" devices, but think this was actually a great service as long as the home is unoccupied. As a tenant I was able to easily visit a dozen different homes in one day without having to spend hours on the phone scheduling visits with property managers.