Well would you? or have you been marked as their possession? Have you marked your sub/slave with your brand?
I have to admit I would love a tattoo of possession, however life's whimsies and waverings tend to follow me and I would not be able to commit to this I think. I wear jewellery instead. A ring (with an O ring attached), a necklace that says in a heart 'Slave to...' and a bunch of charms on a bracelet that represent the Ds in the dynamic. One charm in particular is my favourite. A wolf silhouette howling at an unseen moon. I feel like that is Him on my wrist with me when I wear the bracelet.