Bluetooth Low Energy Proximity sensing less than 2 feet?
The fluctuation of the BlueTooth signal is probably too strong to get 60cm/2 feet precision.  You could combine several sensors to create the effect, though. 


Use BLE to discover that the object is within 10m, provide security and wake your device.
Work with light sensors, motion sensors, gyroscopes, etc to guess what is happening up close and animate/react.


Can you share more details about your project?