Keepkey is really secure when it comes to Security and Open-souce Software! Having looked into the top 3 models such as the Keepkey, The Ledger & Trezor, I can clearly say that Ledger is the least secure! Keepkey uses a similar code based software that Trezor uses, both of them would make Secure Wallets however owning a Keepkey & Ledger, Keepkey Hardware Wallet is definitely features more Security! Not that many Hardwallets out there in the first place