I've spent a bit of time going through their website, and as far as I can tell, their wallet is simply an airgapped laptop inside a locked briefcase.

There's lot of flashy graphics and nice videos talking about how they are revolutionary and their innovations and all the rest of it, but it's very light on actual details. You can see their wallet on this page: https://www.gk8.io/product/. As you can see, it is essentially an airgapped laptop which signs the transactions, which are then transferred to their hot wallet to be broadcast.

The website states 5 patents, but I can only find one (https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2019159172&docAn=IL2019050181), which again, doesn't contain anything particularly interesting or groundbreaking.

I don't know if I'm missing something here, but this doesn't seem like anything special. Unless there is something extra they haven't released the details of yet, then I (and many others) are already using this exact set up, minus the armor plating for the laptop. Of course their bounty program will be completely safe - I also challenge everyone to hack my permanently airgapped wallet I only communicate with using QR codes, and I'll give you as long as you like to do it.

Is it a coincidence that it is the same amount of money or is it a popular amount that hackers get when they hack something? I don't want to compare how much better is HW from OP, than Bitfi which was in a category of "hacking for kids", but I know how easy is say that hacking was not successful and the bounty would not be paid. I noticed that they use words such as "up to", "may receive" or "a satisfactory explanation" which indicate that things are not quite as simple as they seem.

I'm wondering if this is a one-way device that is broadcasting only what is that "exchange portfolio" in the picture with the amounts in $.
In theory, this thing shouldn't be able to get any information about the price unless through manual input, right?

When looking at it, it might be safe for hacking but that armored suitcase is like a honeypot for the 5$ wrench attackers. 

Also, "military-grade physical protection"...."and Practical".

Whenever I hear the term military-grade protection my head and my back start to ache simultaneously.
To fit even a small laptop in a case that is both water-resistant and would no be opened like a tuna can by a cheap crowbar you will have at least 7-8 pounds of metal in that thing not counting anything else and this only for a 10inch one at best. Hardly "practical"

This amount is for marketing purposes and they will not make a payment if someone hacks that wallet or at least they will give more excuses like blocking physical access^[1] and others.

I see a negative signal because whoever displays such an amount aims to make the customer feel that the device they are using is safe on the pretext that he is offering a huge amount that tempts any hacker to hack it and no one has succeeded ( like unhackable wallet offer^[2].)


[1] [2] 'Unhackable' BitFi crypto wallet has been hacked