Folding utility knife that fits in your wallet

The CardSharp 2 from Iain Sinclair is a folding utility knife that turns into a credit-card object when it's not in use, suitable for storing in your wallet. It's a clever little design, unlike a lot of credit-card tools that leave you with a rectangle of plastic in one hand and a tool in the other, the "card" folds around to become the handle.

(via Red Ferret)



    1. They won’t but the TSA is already well-aware of the version of this that looks suspiciously like a bi-lateral mastectomy and is thoroughly searching already-traumatized women with all the rigor and bloody mindedness one might expect from those who rate one step up from a mall security guard.


    1. 2.2 mm, according to the ‘more information’ page. That’s about  a sixteenth and a half in inches.

    1. I got a couple of these recently.  I gave one to dad and he was supposed to try taking it to Europe… hope the utilikey makes it there and back on his keychain!

      Also, be careful how you close the thing.  One of the friction fit nubs holding the thing together broke right off about the second or third time I closed it.

  1. I bought one of these last spring.

    It’s barely adequate.  The case/handle is EXTREMELY flimsy plastic.  Fold/unfold it a few times, and the little plastic nubs that are supposed to hold it together loosen up so much that it’s a PITA to hold on to the thing.

    If the handle was thin metal, it could work great.  But as it is now – don’t waste your money.

  2. I also bought the first generation.  Do not be impressed by the flashy rendered drawing.  It is no where near as impressive in person, and very flimsy.    Always be wary of a prodcut that still uses renderings in their sales ads, long after the product is available for photography.

  3. Don’t waste your money or your fingers. The realization of this cool idea is an absolute joke! The construction is so flimsy that the knife is more a liability than something of utility. I don’t use it to cut anything more than paper or thin cardboard as the grip would easily bend or snap if applying too much downward cutting force.

    I bought the original version a few months ago and my guess is it was discontinued due to its poor construction and inevitably the numerous customer complaints. It took almost a year to receive after ordering it due to endless revisions. This “new” version looks identical to the original other than the little safety tab that has been added as the original would easily pop open in your pocket. This knife is awful!

  4. In my experience, if it has the designer’s signature on it twice, “utility” is the least likely word to describe an object.

  5. When I want a knife I’ll grab a damned knife, not a useless piece of weapon fetishists’ origami from the far side of the flea market.

  6. 6-months ago I sent product info for this knife to the TSA; (I originally found this product at NotCot) they wrote me a letter back stating they were too busy to look at it. “Busy doing what?” I thought . Have they ever even caught a terrorist yet?

    1. Why would they send a letter back, which would take longer than actually looking at the info? Pics or it didn’t happen.

  7. despite apparently being designed in UK  it is illegal to carry one here without good reason as it is a lock knife, not only airports where this would get you in trouble.

    1. I bought this light. It was theoretically worth the money. The LEDS where bright, no throw but bright. It was so so so slim and it recharged via USB. 2 things I was looking for in a pocket flashlight. I forgot I had it all the time. but…..

      it broke. They replaced it… within a day that one broke. My guess is that it isn’t structurally capable of  withstanding the force applied by pants on flat objects in pockets, when seated or crouching.

  8. I would agree with previous posters, skip this flashy piece and go with a uitilikey or something of the like. I used to have a utilikey myself but ended up abandoning it at court house door security.

  9. This is like porn for those Every Day Carry people, or they’d probably scoff at it not being a giant Rambo knife. 

  10. I don’t see how this is in any way an improvement over a razorblade, something I’ve been carrying around in my wallet for years, incredibly versatile, very small and thin, very cheap, and easily replaced when it loses its edge.

    Sexy design on that knife, though.

  11. Somehow I find the production of knives specifically designed for concealment fairly immoral. If you needed a blade for a legitimate purpose why wouldn’t you just carry a knife?

    1. Somehow I find the production of knives specifically designed for concealment fairly immoral.

      I don’t think that word means what you think it means, then.

      If you needed a blade for a legitimate purpose why wouldn’t you just carry a knife?

      Ah, legitimate.  We’re not talking about morality at all, then.  We’re talking about laws that restrict behaviour based on social class – the powerful openly carry weapons and are escorted by armed soldiers of the state, while the poor are not even allowed to have tiny knives secreted on their persons.  I understand now.

      1. Eh, no you don’t.  If I find a product personally distasteful to my personal sense of morals I can say can say so freely. There are hundreds of completely kosher reasons for owning and carrying blades (they are after all one of the most basic and useful tools) but they are also weapons. CardSharp is obviously meant for concealment (this is used as a selling point on the website), it is designed to look like a benign object and to be easily hidden. Plus I question the basic practical utility of the CardSharp and knives like it. I can’t see how it would be as useful as a tool compared to even the most basic pocket knife. I would how ever be just as effective if used offensively. These facts combined suggest to me that it is produced and sold mainly as a concealed weapon which I find immoral. I don’t expect you to agree with me but you could refrain from being quite so sarcy.

        P.S. I am currently training in the security industry and it has been made clear on several  occasions how much of a pain in the arse “card blades” are so I may be bias.

        1. The utility is in always having it on you. It’s very easy to forget a regular pocket knife, or to lose it. It’s hard to do either of those things with something that stays in your wallet most of the time.

          Yeah, maybe this is easier to sneak past security at a rock concert… personally I’m not concerned. I stopped carrying a pocket knife because there are so many situations that end in you losing it (rock concerts, air travel, whatever), and I would consider carrying this type of knife if I really cared (and if I carried a wallet at all) because security folks keeping out small knives like this is pointless (even on airplanes) and small knives are very frequently very useful.

        2. Certainly not trying to dictate morality or restrict your freedom of speech.  Just pointing out the socially acceptable but ethically suspect  juxtaposition of “morality” and “legitimacy”  in your post.

          I believe concealed weapons have no moral dimension, personally, except in the indirect context of resistance to immoral tyrannies that forbid open possession of weapons by oppressed persons.  A hammer’s still a hammer regardless of whether it’s hidden in a toolbox or being used to smash someone’s head in public.  The difference is in the user, not the tool; any such inanimate object could be used as a doorstop in Mother Teresa’s hospital and it would still be the same object.

          Don’t worry, Antinous, I’ll behave.

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