Enter the 8-digit serial code to compare your temporary locked fingerprint with the factory reference image.

Alpha program

We have selected a limited number of alpha testers for phase one with a potentially extended program of follow-up design iterations at the beginning of 2020.

As a TEP alpha tester, you are invited to perform multiple attempts to surpass the security mechanism.

How BitBoxTep works

BitBoxTep is a security packaging that significantly raises the cost of tampering during shipping or storage.

Our solution proposes a temporary locked fingerprint consisting of spherical particles. The negative pressure achieved by vacuum sealing creates an elaborate design in a transparent vacuum bag. When the vacuum bag is opened, the spherical particles mix. This makes it extremely difficult to rearrange into the original design. You compare the reference image fingerprint taken prior to shipment with the received packaging. Currently, you use your eye to verify that the pattern is unchanged. Eventually, a mobile phone supported computer vision app will verify the images to further enhance accuracy.


Scan the QR code to access your reference image or visit https://tep.shiftcrypto.ch to enter the 8-digit serial code in the text mask. Important: Check the URL carefully to make sure you are visiting the correct website.


Shake the package to verify the particles are locked. A few particles within clusters may move freely in a small range.


Compare the temporary locked fingerprints of the reference image and your packaging. They should match.


Cut the vacuum bag open and pull the particle pouch away. The particles must mix into a loose state. If they are stuck to the pouch and don‘t mix, please contact labs@shiftcrypto.ch.

To verify if there is a difference between your fingerprint and the reference image, we recommend to go from high level to details.

Are there clearly identifiable clusters?
Are the clusters in the same positions?

Do empty spaces look similar?

Do single particles match up?


We’ve prototyped a number of particle pouch designs with different materials, sizes and colors. Our main focus was to identify the best suitable material combination for the particle pouch (rigid, soft) which would lock the particles in place while ensuring that they become loose and mix when the vacuum pressure is released.

We use industrial grade vacuum sealing equipment to make reproducible test sets. We’ve tested our prototypes to work in a temperature range between +40°C and -20°C. We aim for both more intense sub -20°C tests soon and upper temperature limitations by using high temperature resistant plastic casings.

We are currently able to lock over 95% of the particles. A handful of particles in tight cluster situations tend to move within a small area, which we consider acceptable. We’re constantly improving our physical prototypes to get as close to 100% as possible. Eventually, a mix of particles with different colors (RGB) will enable even higher entropy.

Image: Prototype with rigid shell and latex membrane, unfortunately does not work well in frozen condition.