[Noisebridge-discuss] Upstairs door latch mechanism?

[Casey Callendrello]

On 02/10/2012 02:08 PM, Danny O'Brien wrote:
> There's a couple of answers to this: one is (and I think that this is
> the thinking behind the access control) that we create a shibboleth -- a
> number, a little song and dance people have to do, that proxies in some
> way to "is Noisebridgey". "You have to know the number to come in", is
> something people feel socially more comfortable saying.
I think clever hackers who have any motivation to visit are not so
easily scared off by a bit of a technical challenge. Post some
combination of these on the wiki, where the solution is a valid door
code, and have a cron job that rotates them

Downloadable MP3 consisting of dtmf tones. Decode them for the answer
Math problem of reasonable complexity
Call a phone number, faking your caller id to our specifications
Resistor code puzzle
IPv6 connectivity challenge

Then throw the doorbell in the dumpster.