Schlage 9691T MIFARE feature both standard 125 kHz proximity and 13.56MHz frequency that utilizes high security encrypted data which is mutually authenticated in communication between the card and reader. (note: code on back of fob may differ than what is pictured. But it is in the 26A format.)

Great for apartment key fob replacements!

 

Get them cheaper here than what your apartment would have charged you!