This formed the original basis for what is now known as caller ID.
The first caller ID equipment was installed at Peoples' Telephone Company in Leesburg, Alabama and was demonstrated to several telephone companies.
The original and historic working models are still in the possession of Paraskevakos.
The first commercially available device that could be properly referred to as a "smartphone" began as a prototype called "Angler" developed by Frank Canova in 1992 while at IBM and demonstrated in November of that year at the COMDEX computer industry trade show.
New kinds of applications are introduced every other day, some are very innovative while others fail to interest the customers.