Custom Tamper Evident Stickers so opened packs are easy to spot

Tamper evident sticker guide

How to choose a seal that does its job

A tamper evident seal is only useful if removing it leaves a sign. That depends on the material, the adhesive, the surface and where the seal crosses the opening.

Why use tamper evident stickers?

Food delivery, online retail and product manufacturing all depend on customers trusting that what arrives is what left. A seal across the opening gives the recipient a simple visual check, and it gives you a way to show you took care over the handover.

They also discourage casual interference. A driver, courier or shop visitor is less likely to open a pack when doing so will obviously break a printed seal.

Printing your own seals adds branding to that moment. A logo and a short message such as ‘sealed for you – do not accept if broken’ turn a security step into part of the customer experience.

Where tamper evident stickers are used

Common applications include:

• Takeaway and delivery bags – seals folded over the top of paper or plastic bags.
• E-commerce boxes – across the flap of mailer boxes for higher-value orders.
• Food and drink products – over jar lids, tub rims and bottle closures.
• Cosmetics and supplements – across carton ends before products reach the shelf.
• Document and sample envelopes – showing whether contents were accessed.
• Retail displays – on boxed stock that customers pick up and inspect.

Materials: why the choice matters

A standard vinyl sticker is designed to be flexible and strong, which means it can often be peeled off in one piece and replaced. That is ideal for most stickers but works against a tamper evident seal.

Paper seals with a firm adhesive tend to tear when lifted from cardboard, which makes them a practical, simple option for bags and boxes. Where you need a more specialised effect, tell us about the packaging and the level of evidence you expect, and we will confirm which constructions we can offer for that job.

Adding design details increases the evidence further. Fine background patterns, holographic film and sequential numbers all make a replacement seal harder to pass off.

Placement and testing

The seal must cross the join so the pack cannot be opened without disturbing it. Leave enough length on each side of the opening for the adhesive to grip, and avoid areas that are creased or coated.

Test on your real packaging before a full rollout. Apply a seal, leave it for a day, then try to remove it the way someone curious might. Check what happens in the fridge or the delivery bag too, as cold and condensation change how adhesives behave.

Seals show that opening may have happened; they do not physically prevent it. Pair them with good handling procedures and make sure your wording on product safety is correct for your sector.

How seals strengthen your brand

A well-designed seal is one of the first things a customer touches. It signals care and professionalism, and a branded design feels deliberate rather than like a strip of tape.

Consistent seals across your range also help staff: everyone knows what an intact pack looks like, which makes checks at dispatch and delivery faster.

Why businesses choose AStickerPrinting for tamper evident stickers

We ask how and where your seals will be used before recommending a material, and our free artwork check makes sure fine security patterns will print clearly. You approve a PDF proof first, and once approved, your seals are produced in 10–12 working days.