WHAT IS THE SIGNIFICANCE OF LOCK AND KEY TATTOO?

If you want to know the significance of a lock and key tattoo, then a tattoo of lock and key suggests a secret, something which is meant to be hidden but it has an answer.
Getting a lock and key tattoo is one of the great ways to show that you are a type of person who people can easily confide in as you are trustworthy and will never reveal their secrets to anyone, no matter how much pressure you have.

Also, this tattoo gives an indication of the protection of self, overall protection and anything that is cherished by the individual. Birds, Ribbons an Flowers are also sometimes introduced in this tattoo.