Radio frequency identification (RFID) tech has been employed in some pretty noble causes, like tracking timber to curb illegal logging and tagging animals for study and to better manage their habitats. And now that RFID has criminal-types like poachers and illegal loggers looking over their shoulders, it's now being deployed against a far more prevalent kind of criminal: you. Three hotels in Honolulu, Miami, and NYC have employed a new kind of washable RFID tag to keep you from stealing their towels, linens, and plush terrycloth bathrobes. It almost takes the fun out of travel.