A prototype of mixed paper and electronic strip, called
Striptic, has been developped by a team at ENAC Toulouse :
Strip'TIC a DTI/ENAC project
The concept is interesting although, obviously, radically different than stripless systems. In particular, this system offers a larger, and more efficient in my opinion, variety of input (the system recognizes any writing on the strips, the position of the strips on the board, etc.) than the tedious "Windows like" dropdown menu of stripless system I have experimented (Eurocat).