Keep a wifi password
Photograph the card once, and hand the network to a guest without anyone typing.
Photograph the card, the router sticker, or the slip the hotel left on the desk. Keeplea reads the network name and the password off it and builds the card for you.
The password stays covered
It is shown as dots until you tap it, and it covers itself again when you leave the item. Nobody reading over your shoulder gets it for free, and you do not have to think about that in the moment you are handing your phone to somebody.
Guests join from a QR code
Open the item and show the code. Their phone camera reads it and offers to join the network — no spelling out a string of characters, no typos, no reading it aloud across a room.
If it read the wrong thing
Cards are printed in every imaginable way, and some of them defeat it. Retake the photograph from the item, straight on and with the whole card in frame, and it tries again. You can also correct the details yourself: open the item and edit it.