What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit label used for information in computer systems. The term GUID (Globally Unique Identifier) is also used.
Why Version 4?
WebKaar generates Version 4 UUIDs, which are randomly generated. The probability of a collision (generating the same UUID twice) is so astronomically low that it's effectively impossible, making it perfect for database keys and session IDs.