Guide

The hidden danger of accepting an invalid entry

By Andrew Walmsley · 9 June 2025 · Updated 3 November 2026 · Smartslip.ai, built by Brazen Labs

Two cream slips, one with a gold cross and one with a mint check.

A competition can lift sales and create a buzz. It only keeps doing that if people believe it. Some promotions accept a till slip that does not even contain the product. The cost shows up later, and it is larger than the prize.

What an invalid entry costs

  • Trust. Once people see that a slip without the product, or a fraudulent one, was accepted, the reputation goes with it. Word of mouth turns the wrong way.
  • The result. The campaign was meant to change what people buy. Bad entries make the data unreliable, and the next decision is built on a skew.
  • Loyalty. The point was to thank a real customer. If anyone can win without buying, that thank-you means nothing.
  • The budget. Money and prizes go to entries that never helped the business.

How Smartslip.ai holds the line

  • The check accepts a slip with the right products. A genuine customer is the one who gets the reward.
  • A fair, visible process is what people tell their friends about. That is how loyalty lasts past the draw.
  • The data you keep is behaviour you can act on, so the next campaign is aimed at real baskets.
  • The spend lands on people who bought. That is the return.
  • The entry itself stays simple, so the experience builds the relationship instead of testing patience.

Not every altered image is found. A suspicious photo is still held before a reward goes out. The method is in how duplicate and fraudulent till slips are stopped.

To plan one, email andrew@brazenlabs.co.za. The short version of how these campaigns work is in till slip campaigns explained.