On 1/2/2016 1:49 PM, Allen Mulvey wrote: > ... > > In your case, facial recognition? 8-) > > Allen Ha ha! But seriously, RFID tags with auto-feeders can work. Make a "lane" to=20 each feeder so only one cat can fit at once. Once they get to the food,=20 only with the right RFID tag would the food be dispensed. Cheers, -Neil --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .