http://www.theverge.com/2012/8/8/3177438/cyborg-america-biohackers-grinders-body-hackers
I don't know about that, but I've been through multiple security checkpoints since getting them and they've never been noticed.
But can you handle HDDs, without risking data corruption?
http://www.theverge.com/2012/8/8/3177438/cyborg-america-biohackers-grinders-body-hackers