I gave up on bump a long time ago. It fails too often. There is a
limit to how often I can ask the same person to bump again. After the
third time, it is embarrassing how much easier it would have been to
scan a physical business card.

On Sep 14, 11:05 pm, Kristopher Micinski <krismicin...@gmail.com>
wrote:
> On Thu, Sep 15, 2011 at 12:24 AM, Zsolt Vasvari <zvasv...@gmail.com> wrote:
> > How does something like Bump work?
>
> Based on IP magic and a very good algorithm determining bump times and
> mapping them to locations, which they can prove gives a  probabilistic
> bound on the number of errors they can make in identification, and
> keep it sufficiently low (you can ask people to rebump, this is what
> happens in the case where many people are using the system at a
> similar location.)
>
> It's funny, people always present this to me as a counterexample...
>
> Kris

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