Tattoos have been around almost as long as skin.There are as many reasons to get a tattoo as there are people. For instance, in the 5th century BC, they were used to transmit secret messages across enemy lines. A few thousand years later, sailors would tattoo a pig on one foot and a rooster on the other to protect them from drowning.
These days they are often a symbol of love.
And some people love tech so much they tattooed their favourite tech symbols on their bodies as tribute.