Can a guest charge without a charging card or subscription?

Yes, your guest scans a QR sign at the charging station, enters an email address and buys kWh at the price you have set, without a pass, app or subscription. This works both for overnight guests and for passers-by who only come to charge. You don't need to maintain a member list or manage passes; each session appears separately on your monthly overview. For regular visitors, such as a caretaker who comes daily, a separate arrangement outside this system is more practical.