Re: Cruel and unusual punishment
I've a feeling (backed up by Mythbusters) that the whole mobile phone causing issues (with magstrips and NFC and other RID) is a myth
The magnetic cover on my phone definitely wrecked the door card at a hotel recently. Fortunately at that particular hotel they'd given us two cards per room anyway.
That hotel chain expected you to put the key card in a holder inside the room in order to switch the electrics on. One only gave us one card per room which was really *really* convenient when I need to leave the room to get something from the car and leave the children in the room. In the dark. That was until I tried an old work ID card that I keep for scraping the ice from the car. Turns out the electrics switch is purely mechanical :-)
We were on a road trip and stayed at four different hotels in the same chain. Two used mag stripe cards, one used RFID cards and the last used keys - real metal turn-in-the-lock keys. Fantastic.
M.