# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2012-06-18 22:10:36 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/214842576371597312) In reply to: [@andiih](http://twitter.com/andiih/status/214841703692111872) @andiih Mmm. Maybe a NFC tag / Bluetooth Foursquare auto-checkin thing.