Needless to say, key employees and executives were in the loop, but this was one closely guarded secret as most of the other employees knew as much (or should we say, as little) as everyone else at that time. It was given the ACME nickname instead as mentioned above to make communications concerning the handset easier, and more interesting was the alleged unique protocol surrounding ACME – it required staffers to text a secret PIN code to a dedicated phone number once in every 12 hours.
The reason for that? To make sure that there is always an ongoing confirmation that the handset was still in the proper hands. Without any PIN code meant that there was no functionality. We do know how much of a blockbuster the CDMA iPhone became eventually, moving 2.2 million handsets for Verizon in just two months!