I’ve updated the Wave Bubble schems and board files to RC1a which fixes the 2 or 3 bugs notified to me. Check the d0x out from the download page

New York Times’ “ethical advice” columnist Randy Cohen gives his take on RF jammers (like, say, Wave Bubble) in this week’s NYT Magazine:

The Ethicist
The Phone Ranger

By RANDY COHEN
Published: March 4, 2007

Each day people are more brazen and rude with their cellphones. My husband bought a device that can block the signals of cellphone users who annoy him, although he knows such gizmos are illegal. Isn’t his vigilante behavior worse than that of the rudest cell user? — Name Withheld, Connecticut

Your husband may not stifle someone’s behavior merely because he deems it annoying. So capricious a standard would mean constant peril for people who talk baby-talk to their excessively small dogs. Living among other people requires us to tolerate conduct we find vexing.

Or so my head tells me. But my heart says, Your husband is a hero, an acoustic Robin Hood who robs from the rude and gives blessed silence to the poor in spirit.

I propose these guidelines: If someone is yammering into a cellphone on the pavement and you don’t like it, walk away. It is open public space, and opinions vary about its use. Some people place a lower value on quiet than on prattling about what they saw on TV last night. (An immutable law of nature: The louder the phone voice, the duller the conversation.)

But if someone is using a cellphone in a closed space — on a commuter train, in a restaurant — from which you cannot escape, let the jamming begin. We properly limit our freedom when we harm others. It is the cellphoner’s jabbering that prevents you from reading your book or thinking your thoughts, not the other way around.

Those who control shared closed spaces — a theater, a physician’s waiting room — should jam and disclose. Post a sign that says “No Cellphone Service” so people know what they’re getting into. Anyone anticipating an urgent call can ask to use the land line. For decades, doctors on call did just that, and we all survived. Sadly, this solution — ethical, courteous and humane — is frowned on by the F.C.C., but tell your husband I’ll visit him every week in jail.

I jammed Santa’s GPS so he couldn’t find his way to your house.

“In a high-population-density city, inhabitants must be prepared to defend their own personal space. Technologies that increase personal productivity are on the rise, even though they may intrude on others. The unavoidable reaction is to create technologies that counteract other people’s devices. Wave Bubble is a product that counters the all-too-familiar annoyance of loud ring tones and overt cell-phone conversations in public.“

Part of the “Social Defense Mechanisms” projects designed for my MEng thesis.

Wave Bubble was developed under support by EYEBEAM during my R&D fellowship at the Open Lab, thanks!

At HOPE I got to look at a cell-phone jammer owned by a friend. This one is interesting because 1) its extremely well designed 2) it’s very small and 3) it actually has a PLL instead of just being open-loop controlled. The entire package fits into a pack of cigarettes.

(For more disassembly photos & comments…)

(more…)