I lost my key. I updated the locks.
I lost it somewhere. Maybe it dropped out of my bag in the supermarket carpark. Anyway, our locks were quickly reprogrammed.
“First, I inserted the red key three times in the lock, then once the green key. That deleted all that key’s information from the lock. Then I added a new key using the red key once, followed by the new blank key and finally the green.
The reprogramming of one lock took only few minutes. That lost key is now blocked. It won’t open any door to our house anymore.”