"Some Tsunami Media games contained a "Get Injected!" form with instructions on how to get yourself "injected" in the Information Center at the City Hall scene of Blue Force. You had to capture yourself on a VHS tape (the form contained specific instructions on the lightning to be used and how to pose), send that tape to Tsunami Media and they would create the digital files and mail a 3.5" floppy disk back to you, that you could install to the game's directory. This service cost US$ 29.95."
Source: https://www.mobygames.com/game/1478/blue-force/cover/group-358696/cover-862793/