Enable entry codes to be one-time use only.
Friend or neighbor who doesn’t want to download an app and should get restricted one-time access only.
For example, a neighbor wants to pick up a parcel which was accepted by me and I don’t know when he will come and pick it up. An OTP would make a lot of sense here. I can leave the house and my neighbor can pick up his parcel with a one-time-passcode which I gave him.