I haven't explored all the options currently on the market, but it seems like for an adult with other adults, it could work well to have a lock that is secured when your "device" is not nearby, but that readily opens when it is. My wife's car fob works that way, and I'm sure that suffices to explain what I mean. Whether it's RFID, NFC, Bluetooth or whatever. The device doesn't have to be a discrete fob. It could be the smartphone that most people already carry. Obviously, it needs an alternative access method like biometrics or an electronic combination lock.
There are obvious problems with this for securing guns from kids, but when I was in college and afterward living as a single, I had housemates. I wouldn't have wanted them to have free access to all my property, but as long as I was home, I didn't have to concern myself with a possible tragedy if I wasn't in the very room.
It might be something that would appeal to the "tap and swipe" generation. Like I said, I like the simplex combo locks.