- "'There are ways around palm locks,' murmured Killer. Killer had been trained in such things once, in a previous incarnation."
- ―Standard training includes palm lock-bypassing[src]
A palm lock was a lock that was keyed by a palm print. A person would press a palm to a reader, which scanned the print. If it matched, the lock would unlock; otherwise not.
These were relatively low-security in the Vorkosigan Saga; anyone with a reasonable amount of training could bypass a standard palm-lock.
Most books in the series mention palm locks. Slightly better than most for details is: