You can also buy a few cheap RFID stickers that can be overwritten from your phone. The cheapest stores like a kilobyte or so, which is plenty for quite a few c

You can also buy a few cheap RFID stickers that can be overwritten from your phone. The cheapest stores like a kilobyte or so, which is plenty for quite a few codes. You can glue them in inconspicuous "boring" places in plain sight, like under a mousepad or behind a movie poster hung on the wall. Great way to hide secrets in your home without owning a traditional safe (which just screams "steal me! I'm the valuable thing in the room!" anyway.)