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drazvan

HN member
Joined
Wed, Mar 21, 2007, 9:20 PM UTC
HN karma
36
Public activity
30 items

About drazvan

Owner at WhisperCash - www.whispercash.com

Recent public activity

  1. story
  2. comment
    Comment #27794356

    It's actually quite simple - an offline solution is technically incapable of reporting your spending patterns because ... well ... it doesn't connect to any network. It's the same …

  3. comment
    Comment #27794328

    The fact that it's technically possible doesn't mean the banks will enforce it. The reverse is also true, if we do not offer the flexibility, someone else will (since it is technic…

  4. comment
    Comment #27792231

    We do - https://www.whisper.cash/whispercash.pdf . WhisperCash is completely P2P and offline and bank policies are enforced by an on-card component (the "policy enforcer") that can…

  5. comment
    Comment #26586965

    Ah, those were the days... few people really cared about web security back then and Perl allowed you to get really creative :). https://seclists.org/bugtraq/1997/Jun/67 or my favor…

  6. comment
    Comment #22926853

    Applications for S20 ended on March 16th, haven't they? I wanted to apply but definitely could not travel, this change makes it interesting/possible again but I'm not sure it's not…

  7. comment
    Comment #22620835

    http://geola.com/ in Lithuania have a "hologram printing as a service" that works quite well, check them out.

  8. comment
    Comment #16442254

    What secure element chipset are you using? This could be very interesting for a project I am working on. Does it run JavaCard / GlobalPlatform and are the access keys available?

  9. comment
    Comment #15255317

    An old KickStarter-backed project that does the same thing is currently available at http://www.soundlazer.com/ . The physics behind it are explained at http://www.soundlazer.com/w…

  10. comment
    Comment #15199376

    Sent an email, no reply yet, I guess you're flooded with applications.

  11. comment
    Comment #13838069

    http://www.leia3d.com for instance. I have one of their early dev kit displays and it's quite impressive (but very small).

  12. comment
    Comment #13722622

    On my wife's iPhone, it asked her to enter her password again and the weird thing is that it now shows as a new device, called "iPhone" instead of "Cristina's iPhone" as it was bef…

  13. comment
    Comment #12228339

    I'm actually working on something based on this idea - I've created a SIM card for the Internet of Things - basically a smartcard (microSD form factor) that offers a persistent cry…

  14. comment
    Comment #12228296

    I've actually used the "attack" in the article to design a P2P Bitcoin exchange based on the idea of using someone else's contactless card (with permission) in exchange for Bitcoin…

  15. comment
    Comment #11905179

    I'm also in Romania, making about $95k/year. I'm running it through my company, an LLC (SRL in Romanian). Starting in 2016, you can classify yourself as a micro-enterprise if you m…

  16. comment
    Comment #11712687

    BTW, the two major manufacturers they're talking about are NXP ( http://www.nxp.com/ ) and Infineon ( http://www.infineon.com/ ). STMicroelectonics ( http://www.st.com/ ) is also a…

  17. comment
    Comment #11712656

    Feitian has a similar product with known keys and running JavaCard in the form of an USB token - http://www.ftsafe.com/product/epass/eJavaToken . Also much cheaper than the Yubikey…

  18. comment
    Comment #9627621

    How is this different from let's say Swissbit ( http://www.swissbit.com/index.php?option=com_content&view=ar... ) or DeviceFidelity ( http://www.credense.com/ ) or GoTrust ( http:/…

  19. comment
    Comment #9571598

    What if they actually planned this and fine tuned their ASICs so that they would never be able to actually generate enough satoshis to go above the dust limit? They could tell thei…

  20. comment
    Comment #8216189

    Well, the Opgal device has a resolution of 384 x 288 while the E4 lists 80x60. It's probably worth the asking price.

  21. comment
    Comment #8215665

    Like this? http://therm-app.com/

  22. comment
    Comment #8032179

    How about non-exit nodes. I'm actually working on an app (Bitcoin-related) that receives commands from satellite-connected devices (very low bandwidth) and then relays those over t…

  23. comment
    Comment #6753808

    Current price at $600 means people are speculating like crazy - it's not a measure of trust by any means, people are in it to make a quick (and easy) buck.

  24. story
  25. story
    Show HN: A phone-based login system in just a few lines of JS

    To show off the power of our VeriFi system (https://www.veri.fi/) I've spent some 10 minutes today and created a very simple login system for websites that only requires the user t…