8Kbit/second is enough if all you need is to understand what is being
said, not recognize the speaker. The processing power to do this is
pretty small on today's scale of things.)
With decent compression techniques, 8kbps is close to telephone
quality, and 2400bps has artifacts but is still
At 11:26 AM 12/9/2006, Daniel F. Fisher wrote:
Ian Farquhar (ifarquha) wrote The other problem for this technique is
battery life.
Suppose this worked by recording from mic to memory and then transmitting
later. This leads to a bunch of questions:
By what factor could transmission
Ian Farquhar (ifarquha) wrote The other problem for this technique is
battery life.
Suppose this worked by recording from mic to memory and then
transmitting later. This leads to a bunch of questions:
By what factor could transmission time/power be reduced sending such a
recording later?
Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Taral
Sent: Monday, 4 December 2006 2:26 PM
To: [EMAIL PROTECTED]
Cc: John Ioannidis; cryptography@metzdowd.com
Subject: Re: cellphones as room bugs
On 12/3/06, Thor Lancelot Simon [EMAIL PROTECTED] wrote:
It's been a while
On Sun, 3 Dec 2006 20:26:07 -0500
Thor Lancelot Simon [EMAIL PROTECTED] wrote:
On Sat, Dec 02, 2006 at 05:15:02PM -0500, John Ioannidis wrote:
On Sat, Dec 02, 2006 at 10:21:57AM -0500, Perry E. Metzger wrote:
Quoting:
The FBI appears to have begun using a novel form of
At 10:21 AM 12/2/2006 -0500, Perry E. Metzger wrote:
Quoting:
The FBI appears to have begun using a novel form of electronic
surveillance in criminal investigations: remotely activating a
mobile phone's microphone and using it to eavesdrop on nearby
conversations.
The
Thor Lancelot Simon [EMAIL PROTECTED] writes:
It's been a while since I built ISDN equipment but I do not think this is
correct: can you show me how, exactly, one uses Q.931 to instruct the other
endpoint to go off-hook?
You make use of the undocumented remote management interface [0].
Peter.
On 12/3/06, Thor Lancelot Simon [EMAIL PROTECTED] wrote:
It's been a while since I built ISDN equipment but I do not think this
is correct: can you show me how, exactly, one uses Q.931 to instruct the
other endpoint to go off-hook?
That's the same question I have. I don't remember seeing
On Sun, Dec 03, 2006 at 09:26:15PM -0600, Taral wrote:
That's the same question I have. I don't remember seeing anything in
the GSM standard that would allow this either.
I'll hazard a guess: mobile providers can send a special type of
message (not sure if it would be classed as an SMS) with
On Sat, Dec 02, 2006 at 10:21:57AM -0500, Perry E. Metzger wrote:
Quoting:
The FBI appears to have begun using a novel form of electronic
surveillance in criminal investigations: remotely activating a
mobile phone's microphone and using it to eavesdrop on nearby
conversations.
At 07:21 AM 12/2/2006, Perry E. Metzger wrote:
Quoting:
The FBI appears to have begun using a novel form of electronic
surveillance in criminal investigations: remotely activating a
mobile phone's microphone and using it to eavesdrop on nearby
conversations.
The technique is
At 07:21 AM 12/2/2006, Perry E. Metzger wrote:
Quoting:
The FBI appears to have begun using a novel form of electronic
surveillance in criminal investigations: remotely activating a
mobile phone's microphone and using it to eavesdrop on nearby
conversations.
BTW, its easy to
On Sat, Dec 02, 2006 at 05:15:02PM -0500, John Ioannidis wrote:
On Sat, Dec 02, 2006 at 10:21:57AM -0500, Perry E. Metzger wrote:
Quoting:
The FBI appears to have begun using a novel form of electronic
surveillance in criminal investigations: remotely activating a
mobile
Quoting:
The FBI appears to have begun using a novel form of electronic
surveillance in criminal investigations: remotely activating a
mobile phone's microphone and using it to eavesdrop on nearby
conversations.
The technique is called a roving bug, and was approved by top
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