u/Substantial-Try-1198

Hey guys, for the past few years, I have been working on a reusable tamper-evident jar for storing physical items.

The idea is that the lid creates a random physical “fingerprint” every time you close it. Inside the lid are thousands of tiny black and white balls. When you twist the jar open or closed, they mix. Once the jar is closed, the unique pattern is locked in place.

You can take a photo of that pattern with your phone, and later compare it to check whether the jar has been opened. If someone opens it, the pearls mix again and the original pattern is gone. The second pic shows a gif of two different patterns compared to one another, showing it is easy to tell that the lid was opened.

I made it because I wanted a simple physical way to store things like hard drives, USB sticks, authentication keys, documents, etc. Basically anything that you would do want to know if someone has accessed it.

After a lot of hard work and prototyping, I'm happy to announce it's finally complete! Check it out on https://www.entropyseal.com/.

Happy to hear feedback. I’m especially interested in whether the concept is clear and what use cases come to mind. :)

Edit: seems I get a lot of questions about whether the balls move if jar is moved around. Just to clarify, the balls are held firmly in place when the lid is closed tight. So you can handle the entropyseal without the pattern breaking.

Hey guys, not this post is not exactly about safes but complimentary to them. For the past few years, I have been working on a reusable tamper-evident jar for storing physical items.

The idea is that the lid creates a random physical “fingerprint” every time you close it. Inside the lid are thousands of tiny black and white balls. When you twist the jar open or closed, they mix. Once the jar is closed, the unique pattern is locked in place.

You can take a photo of that pattern with your phone, and later compare it to check whether the jar has been opened. If someone opens it, the pearls mix again and the original pattern is gone.

I made it because I wanted a simple physical way to store things like hard drives, USB sticks, authentication keys, documents, etc. Basically anything that you would do want to know if someone has accessed it.

After a lot of hard work and prototyping, I'm happy to announce it's finally complete! Check it out on https://www.entropyseal.com/.

Happy to hear feedback. I’m especially interested in whether the concept is clear and what use cases come to mind. :)

For the past few years, I have been working on a reusable tamper-evident jar for storing physical items.

The idea is that the lid creates a random physical “fingerprint” every time you close it. Inside the lid are thousands of tiny black and white balls. When you twist the jar open or closed, they mix. Once the jar is closed, the unique pattern is locked in place.

You can take a photo of that pattern with your phone, and later compare it to check whether the jar has been opened. If someone opens it, the pearls mix again and the original pattern is gone.

I made it because I wanted a simple physical way to store things like hard drives, USB sticks, authentication keys, documents, etc. Basically anything where you might not need a safe, but you do want to know if someone has accessed it.

After a lot of hard work and prototyping, I'm happy to announce it's finally complete! Check it out on https://www.entropyseal.com/.

Happy to hear feedback. I’m especially interested in whether the concept is clear and what use cases come to mind. :)

For the past few years, I have been working on a reusable tamper-evident jar for storing physical items.

The idea is that the lid creates a random physical “fingerprint” every time you close it. Inside the lid are thousands of tiny black and white balls. When you twist the jar open or closed, they mix. Once the jar is closed, the unique pattern is locked in place.

You can take a photo of that pattern with your phone, and later compare it to check whether the jar has been opened. If someone opens it, the pearls mix again and the original pattern is gone.

I made it because I wanted a simple physical way to store things like seed backups and wallets, but it's also useful for hard drives, USB sticks, authentication keys, documents, etc. Basically anything where you might not need a safe, but you do want to know if someone has accessed it.

After a lot of hard work and prototyping, I'm happy to announce it's finally complete! Check it out on https://www.entropyseal.com/.

Happy to hear feedback. I’m especially interested in whether the concept is clear and what use cases come to mind. :)