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... Sniffer dogs may soon become a useful means of improving physical security in datacenters, as increasing numbers of people are adopting implants like NFC chips that have the potential to enable novel attacks on access control tools.

So claims Len Noe, tech evangelist at identity management vendor CyberArk. Noe told The Register he has ten implants " passive devices that are observable with a full body X-ray, but invisible to most security scanners.

Noe explained he's acquired access cards used to enter controlled premises, cloned them in his implants, and successfully walked into buildings by just waving his hands over card readers.

Unless staff are vigilant enough to notice he didn't use a card, his entrance appears to be a normal, boring, instance of an RFID being scanned.

But like most electronics, Noe's implants include a chemical called triphenylphosphine oxide that has a bunch of uses, including flame retardation, and does find its way into the manufacturing of electronics. Sniffer dogs have thus been trained to sniff out the chemical to detect electronic devices. ...

The main issue with security is that it's defense has to work 100% of the time, while the attacker's offense needs only to work once.