Tamper Evident Label Types

Boo and Mos Tamper Evident Leave a Comment

There are a few different types of tamper evident labels used for different things. We will talk about these uses in another blog post. Today we will look at four different types of labels:

  • Non-transfer labels
  • Total transfer labels
  • Egg shell labels
  • Tamper evident security tape

Non-Transfer Tamper Evident Labels

Non-transfer labels are self-adhesive labels that void themselves when removed. Non-transfer labels leave no markings on the surface that you remove them from. The clever thing about the non-transfer label is when you tamper with it the sticker gets destroyed so you cant reuse it but doesn’t ruin the thing it was stuck to. On the labels we tested we could not see any words like ‘void’ or ‘open’ on the unpeeled sticker so it is hard to tell if they are tamper evident labels until you remove them.

Before Removing a Non-Transfer Label

Blue non-transfer tamper evident label with black text and serial number

After Removing a Non-Transfer Label

Blue non-transfer tamper evident label with black text and serial number showing void across label

Total Transfer Tamper Evident Labels

Unlike the non-transfer labels, transfer labels leaves the bottom part of the label behind showing some kind of void message. The label is destroyed and cant be reused and the person who attached the label will know its been tampered with.

If you look carefully you can usually see ‘void’ or ‘open’ written on these labels before they are peeled off.

Before Removing Total Transfer Label

Red total transfer tamper evident label with black text and serial number

After Removing Total Transfer Label

Red total transfer tamper evident label with black text and serial number showing void after being removed

You can see the original sticker at the top, stuck back on, and the part left behind at the bottom.

Egg Shell Tamper Evident Labels

You have to be very careful with egg shell labels because they are fragile and tampering with egg shell labels will rip them into shreds.

Egg shell labels aren’t like other tamper evident labels as they are designed to resist being removed. Egg shell labels rip very very easily when you try to tear them off with your bare hands. Egg shell labels are one of my favourite labels because of their name and you get to destroy them 😀

Before Removing Egg Shell Label

White egg shell tamper evident label showing word void in black text

After Removing Egg Shell Label

Ripped white egg shell tamper evident label showing part of word void in black text

Tamper Evident Security Tape

Tamper evident security tape looks like regular packaging tape but its not because when it is pulled off the tape voids itself leaving words on the box, like a total-transfer label, so cant be reused.

We have seen this tape on the internet but sorry we don’t have our own pictures of security tape as we haven’t got our hands on any yet to test 🙁

 

We hope this is helpful. If you have any questions or want to get in touch, you can contact us on Twitter:

https://twitter.com/mroldskinny

https://twitter.com/_b003y_

Photos taken by MOS.

Boo has a passion for bypassing tamper evident devices, having first got her tiny 6 year old hands on them at BSides Canberra in 2017. When she isn't bypassing tamper evident devices or lock picking, she can be found writing code, programming her robot, performing gymnastics manoeuvres or taking other children down in the MMA dojo.

Mos aka MrOldSkinny, loves to hack things together whether it be hardware, software or a combination of both! When he isn’t doing crazy hacks you will find him picking locks, tampering with tamper-proof devices, and finding weaknesses in security controls. All the cybers will be his!

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