method of unblocking code node device keystone type with limbo with discrete markings with no symbols

摘要

1. A method for unauthorized unlocking of code unit devices of a lock variety comprising a revolving dial with discrete dial marks having no symbols for setting said dial to a working position, characterized in that setting said dial to a working position is carried out by counting a predetermined number of the dial marks after a signal which appears while turning the dial and which is perceived by tactile organs only.