Reserve
While online, the customer sets aside ₹500 from the example ₹1,000 balance.
When the signal
disappears, pay on.
Paron lets customers set aside a spending limit while online, pay a nearby merchant when the internet is unavailable, and send the payment receipt for checking when they reconnect.
MERCHANT TERMINAL
Terminal Idle
Coffee House · Terminal #1
Demo merchant is ready
P
WALLET · 5G ONLINE
₹500
Allowance Reserved
Set aside before going offline
ACTIVE
Pay ₹125 (Offline Ready)
Illustration · no real payment is made
BUILT AROUND
SET A SPENDING LIMIT BEFORE GOING OFFLINE
RECEIPTS WITH DIGITAL SIGNATURES
RESERVE MONEY FOR OFFLINE USE
CHECK FOR REPEATED PAYMENTS
SEND RECEIPTS AFTER RECONNECTING
SAMPLE WALLET BALANCE
WEBSITE PAYMENT HANDOFF IS SIMULATED
DESIGNED FOR PATCHY CONNECTIONS
BUILT AROUND
SET A SPENDING LIMIT BEFORE GOING OFFLINE
RECEIPTS WITH DIGITAL SIGNATURES
RESERVE MONEY FOR OFFLINE USE
CHECK FOR REPEATED PAYMENTS
SEND RECEIPTS AFTER RECONNECTING
SAMPLE WALLET BALANCE
WEBSITE PAYMENT HANDOFF IS SIMULATED
DESIGNED FOR PATCHY CONNECTIONS
ABOUT PARON
Offline doesn’t have to mean
Offline doesn’t have to mean
payment stops.
Paron is for places where internet access may be unreliable, such as transit stations or rural areas. While online, a customer sets aside part of their wallet balance as an offline spending limit. This website uses example values only; the Android app demonstrates the connected funding flow.
When a customer pays offline, the merchant keeps a payment receipt. After the devices reconnect, Paron’s online service checks the receipt and spending limit before updating the merchant’s account record. This website simulates the nearby handoff; it does not connect to a real merchant phone.
Walk through the payment flow →
THE PAYMENT FLOW
Four steps. One connected story.
Select a step to see what happens for the customer and merchant. The examples explain the flow; the website’s nearby payment handoff is simulated.
Go offline
The internet drops. The app can still use the amount reserved beforehand.
Pay nearby
The merchant receives a receipt showing who was paid and how much.
Reconcile
After reconnecting, Paron’s online service checks the receipt and updates the merchant’s account record.
COMMON FAQ
Everything you need to know.
Plain answers about offline limits, payment receipts, and the browser simulation.
Before losing internet access, the customer sets aside an amount for offline purchases. When receipts
later reach Paron’s online service, it compares the total with that limit and looks for repeated
payments.
A merchant may already have handed over goods before those checks happen, so offline payments still
carry
risk. The website walkthrough uses sample data; it does not reserve or move real money.
While devices have no internet, a server cannot check a payment as it happens. A merchant might accept a
receipt that is later rejected during syncing. Paron limits the amount available for offline spending
and
checks receipts after reconnecting; this reduces risk but cannot remove it completely.
No. This website is a local simulation: its sample balance, offline limit, receipts, and sync result are
stored only in your browser. It does not connect to PayPal or Paron backend services. PayPal Sandbox
funding is part of the Android app/backend flow.
The project includes a native Android app for demonstrating the phone experience. This website is a
separate judge walkthrough: its phone-to-phone payment animation is simulated and does not use Bluetooth
or Android secure hardware. Use the Android app to show the device flow.
THE ANDROID COMPANION
Made for a
Made for a
phone first.
The Android app is the native device experience. This web companion provides judges with a two-sided interactive walkthrough to watch the consumer and merchant perspective change together.
Open the Interactive Demo →
PARON
•••
Your wallet
₹1,250
Available balance
◈ Offline spending limit
₹300 set aside to spend
⌂◉▣◎
CONSUMER WALLET
PARON
•••
Offline payment
₹125
To Coffee House
✓ Payment receipt with digital seal
Ready to hand over
⌂◉▣◎
MERCHANT RECEIVER
SEE BOTH SIDES RECONCILE
Take Paron for a spin.
Set aside a sample allowance, simulate losing internet, and follow a sample payment receipt from the customer to the merchant. Every balance and result on this website is sample data; no backend settlement or money transfer takes place here.