Retrofitting can be a practical option when the existing machines are still mechanically reliable. Instead of replacing an entire fleet, operators can add compatible cashless payment hardware and continue using the machines they already own. Solutions such as https://aeryngillern.com/ are designed for unattended businesses and can support cashless payments alongside telemetry and remote monitoring. The key is checking compatibility before purchasing anything. You’ll want to confirm the machine’s control system, power requirements, available connections, network coverage, and physical space for the payment terminal. It’s also worth checking whether the system supports the card networks and mobile wallets your customers commonly use. I’d recommend testing the retrofit on one or two machines first. That gives you a chance to verify installation, payment reliability, transaction reporting, and customer usage before upgrading the entire fleet. If the older machines are otherwise in good condition, a cashless retrofit can be a much more practical investment than replacing perfectly functional equipment.