For lookout towers
An interesting use of access control and cashier systems is security of a self-paid entry to the observation tower. Coin built into the turnstile or located near a turnstile forming a compact unit becomes a "technical opener and the treasury." Technical design may be a simple coin acceptor that accepts only one coin, does not return back, or even a coin acceptor accepting different coins (CZK, EURO), and return the overpayment. It is also possible to install a ticket printer and installation of industrial PC with a software for recording and archiving payments.