Adlock Key: 2021

: The premium version includes dedicated filters to block spyware and social media tracking scripts.

The weakest link in most medium-security locks is the key itself.

A might also refer to a two-part key (split key) used in medieval adlocks, where the key shaft was hollow and contained a sliding inner bit. Inserting the key, then sliding a second "deep piece" engaged hidden tumblers — an early form of combination lock.