Bluetooth integration to mobile app. App would log how often the user is performing pressure relief exercises. This could be in term used as a reminder system for those that are newly injured and in a wheelchair. 

Wireless charging of the system for those that may not have the manual dexterity to plug in a charging cable. For those in power wheelchairs, the system could run on the wheelchair battery.

Shear sensors on top of the cushion. Apparently shear can influence the development of pressure sores.