The token is needed to access AnyLedger blockchain-as-a-service, which is a full blown service enabling IoT-Blockchain scenarios such as tamper proof supply chains, car wallets, peer-to-peer energy grids and more.
Every device employing the AnyLedger stack become an hardware wallet (that's our value proposition!), so in a sense the answer to your question is yes. If you mean existing hardware wallets (Ledger, Trezor, etc.), of course the ENE token will be accepted if the hardware wallet supports ETH tokens.