The scope of PHI can be broad; however, medical information that an employer receives in its role as an employer (and not as the sponsor or administrator of a group health plan), is generally not PHI subject to HIPAA.
Alphabetic characters are the 26 letters of the alphabet. Numeric's are the ten digits. Alphanumerics are both. Some of the special characters on a standard keyboard do not work for usernames or passwords.
A character set is a fixed collection of symbols. For example, the English alphabet âAâ to âZâ and âaâ to âzâ can be a character set, with a total of 52 symbols. One of the simplest standardized character set is âASCIIâ, started from 1960s, and is almost the only one used in USA up to 1990s. (ASCII = American Standard Code for Information Interchange).