Receipt-Verified Point Incentive System
RCTClinical Trial
Self-reported transaction data in financial field experiments often suffers from measurement error, under-reporting, and falsification. Implementing photo-verification backed by convertible reward points increases accuracy and reporting compliance.
Picture this
Think of a store loyalty card that gives you reward stamps: if you just tell the cashier you bought something, you get nothing, but if you show them your physical receipt, they stamp your card. Once your card is full, you trade it in for a gift voucher at the counter.
What the evidence says
Reaching 100 points awarded a 25 AED ($6.81 USD) gift certificate [1]; the verification mechanism successfully generated high-quality, verifiable weekly panel data across 137,927 observations [2].
- Who was studied
- 4,458 retained Filipino migrants in the UAE logging remittance data over 30 weeks.
- How
- In-app point reward structure requiring participants to upload photo receipts showing recipient name, phone number, currency amount, and transaction date to earn variable points toward a threshold.
What to do
Incorporate receipt photo upload requirements paired with convertible point rewards in data collection applications to verify self-reported financial behavior.
From the source
"Participants were asked to upload a photo of the transaction receipt showing all the above items so that the data can be verified. Records that included the receipt photo were awarded points... Upon reaching 100 points, the participant was awarded with a gift certificate of their choice... with a value of AED25 (UAE dirham) (US$6.81)."
A Field Experiment among Filipino Migrant Workers in the UAE