Kraken Security Labs has found a way to extract seeds from a KeepKey cryptocurrency hardware wallet. All that is required is physical access to the wallet for about 15 minutes.
https://blog.kraken.com/post/3245/flaw-found-in-keepkey-crypto-hardware-wallet/
https://blog.kraken.com/post/3245/flaw-found-in-keepkey-crypto-hardware-wallet/