VPOS Contact is not hard to set up and may be retrofitted on any vending machine or other unattended machine. All application updates come about remotely, minimizing the hassle expected to keep up the units. The components is resilient and very secured to stop vandalism. Category A. "Refurbished" - https://leadstar-arms35689.acidblog.net/64930852/ap-121-snack-vending-machine-an-overview