One of the most appealing and unique kind of tattoo designs is definitely lock and key tattoos. Very connected to love and mystery, many people generally prefer a heart-shaped lock and a key spruced up with names, dates or one meaningful word. Undoubtedly, this tattoo design is very popular among couples as they can wear one piece of this magical pair on the same part of their body. It strongly expresses how wonderfully you are made for each other. If you want to show everyone the locking of your hearts in love, this pattern is for you. Before making up your mind, please have a look at these examples to help you through the decision making process.