Benefits per Industry

Benefits for Sales Professionals
Sales professionals may be the biggest benefactors of being able to control the Caller ID display number.

Benefits to Law Enforcement
The ability to display any number on the Caller ID can be a valuable resource when trying to catch bad guys.

Benefits to Mystery Shoppers
Now people that work from home can hide their home phone number and display local numbers.

Absolutely. Caller ID Replacement (Caller ID Spoofing) is in fact legal; however, it is not legal to use Caller ID spoofing for nefarious purposes such as fraud or harassment.
President Obama signed the “Truth in Caller ID Act,” banning the transmission of inaccurate caller ID information “with the intent to defraud, cause harm, or wrongfully obtain anything of value.”