# Functions
NewLedgerHub creates a new hardware wallet manager for Ledger devices.
NewTrezorHub creates a new hardware wallet manager for Trezor devices.
# Constants
LedgerScheme is the protocol scheme prefixing account and wallet URLs.
TrezorScheme is the protocol scheme prefixing account and wallet URLs.
# Variables
ErrTrezorPINNeeded is returned if opening the trezor requires a PIN code.