Yes .. a spy novel I want a person to hide a miniature memory circuit in a capsule the size of a capsule pill, and smuggle out out of a facility by slipping it into a prepared 'pocket' under their skin. How 'moderately' feasible would it be to create a small such pocket, and keep it from healing with an insert that would have a 'tab' to keep the opening also from healing over .. for perhaps a week or more ? It would be painful I am guessing ... and local analgesic cream could be used ... Feasible ? Credible ?