UPI payment system for vending machines
A UPI payment system confirms each payment to the machine and releases the product automatically.
THE CHALLENGE
A QR sticker cannot tell the machine someone has paid
Vending machines in schools, offices, hospitals and public toilets sell items worth ₹5 to ₹100, from sanitary napkins and cloth bags to snacks, drinks and tea. Fewer customers carry coins, coin mechanisms jam and attract theft, and a plain QR sticker cannot tell the machine that someone has paid.
WHAT IT DOES
What it does for you and your customers
RNDSquare designs the payment module for your vending machine: a dynamic QR display and speaker, with the interface your controller needs. We engineer MDB for standard vending controllers, and coin-pulse emulation or relay outputs for simpler machines, plus a low-cost single-product version for napkin and bag machines. We also build the application support: product and price setup, free-vend mode for CSR programmes, and an operator dashboard.
Accept UPI from any app
Each product gets a QR code for its exact price, and payments under ₹1,000 can use UPI Lite with no PIN.
Sound confirmation
The machine announces the payment and drops the product.
Instant refund on service failure
If the product does not drop, the customer is refunded automatically.
Hosts receive payments within 24 hours
Operators get each day’s sales the next day.
Full application development
Inventory tracking per product and per machine, with refill alerts before a machine runs empty.
AT A GLANCE
UPI for vending machines in brief
- Hardware
- Dynamic QR display and speaker
- Standard vending controllers
- MDB
- Simpler machines
- Coin-pulse emulation or relay outputs
- Napkin and bag machines
- A single-product version
- Payments
- A QR per product at its exact price. UPI Lite with no PIN under ₹1,000
- Application
- Product and price setup, free-vend mode for CSR programmes, operator dashboard
UPI APPLICATIONS
Other machines we add UPI to
- UPI payment module for DC fast chargers
- UPI payment module for AC EV chargers
- UPI payments for 2W, 3W and e-rickshaw charging points
- UPI payment for parking boom barriers
- UPI controller for water ATMs
- UPI controller for milk ATMs and liquid dispensers
- UPI payment for laundromat machines
- UPI payment for smart lockers
- UPI payment for self-service kiosks
FAQ
Questions buyers ask us
How do you add UPI to an existing vending machine?
We fit a payment module with a dynamic QR display and speaker. It talks MDB to standard vending controllers, and uses coin-pulse emulation or relay outputs on simpler machines.
Is there a version for sanitary napkin machines?
Yes. A low-cost single-product version suits napkin and bag machines, and free-vend mode supports CSR programmes.
What happens if the product drop fails after the customer pays?
If the product does not drop after payment, the customer is refunded automatically.
When do owners receive the money?
Vending operators receive payments within 24 hours. Each day's collections arrive the next day, with a settlement report.
Building vending machines that should accept UPI?
Book a technical review. We will look at your vending controller and products, and plan the payment module with you.