Re: A new approach to Re: Itch3: Anti-lost/theft protection

2007-03-02 Thread Ortwin Regel

The thing has bluetooth so it should be able to connect to the
Wiimote. Using one instead of an internal accelerometer makes sense,
because when you move your phone around, it's hard to keep looking at
the screen.

Ortwin

On 3/1/07, adrian cockcroft [EMAIL PROTECTED] wrote:

I would like to include an accelerometer in a phone design (my own
homebrew design or a future Neo perhaps?), then all the Nintendo Wii
style interactions become possible.

If my phone is locked it asserts that it should be at rest, if someone
picks it up it needs a code or a secret gesture on the touchscreen to
unlock it or set moving locked mode.

if it doesn't get the code it asks to be put down again, if that fails
it complains loudly in speakerphone help, I'm being stolen, put me
back! or whatever audio you like.

It also posts its location to a web service.

Should be easy enough to code, I'm just waiting for the hardware to catch up...

Adrian

On 2/28/07, Attila Csipa [EMAIL PROTECTED] wrote:
 On Wednesday 28 February 2007 21:44, Steven ** wrote:
  Caveat emptor.  Possession of stolen property is still a crime where I
  live, even if you didn't do the actual stealing.

 All I'm saying (IANAL of course) that for many of those items (especially on
 places like ebay) it is very hard for the buyer to establish whether the good
 is actually stolen or not (receipts and boxes can be photoshopped all too
 easy), and he has to rely on a level of reasonable doubt (based on seller
 rating, price, provided images, etc) to determine whether he is getting the
 good from a trustworthy source.

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Re: A new approach to Re: Itch3: Anti-lost/theft protection -THE REAL PROBLEM APPEARED!

2007-03-01 Thread Attila Csipa
On Thursday 01 March 2007 08:41, you wrote:
 later someone will write a Troyan Horse, some king of dialer (like for
 application made calls and sent smses. Openmoko kernel should log any

 What do you think?

There are two sides to this problem - one, the origin of software. This has 
actually been dealt with so we have examples like the Debian repositories 
which verify (gpg signatures, etc) packages so you know that the thing you 
are installing actually came from a place/person you trust. The other problem 
is just as present on regular PC-s, as you have trojans which, when run, 
change your dialup settings so you dial a high-price number on the other side 
the globe instead of your regular ISP. The second aspect is protection from 
malware. There are several solutions on this - proper user rights, 
virtualization, and filtering on the API level of the phone itself, best to 
combine all of these, since kernel logging won't help much if the trojan has 
root access and hides/works in the kernel as a module, for example.

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Re: A new approach to Re: Itch3: Anti-lost/theft protection

2007-03-01 Thread adrian cockcroft

I would like to include an accelerometer in a phone design (my own
homebrew design or a future Neo perhaps?), then all the Nintendo Wii
style interactions become possible.

If my phone is locked it asserts that it should be at rest, if someone
picks it up it needs a code or a secret gesture on the touchscreen to
unlock it or set moving locked mode.

if it doesn't get the code it asks to be put down again, if that fails
it complains loudly in speakerphone help, I'm being stolen, put me
back! or whatever audio you like.

It also posts its location to a web service.

Should be easy enough to code, I'm just waiting for the hardware to catch up...

Adrian

On 2/28/07, Attila Csipa [EMAIL PROTECTED] wrote:

On Wednesday 28 February 2007 21:44, Steven ** wrote:
 Caveat emptor.  Possession of stolen property is still a crime where I
 live, even if you didn't do the actual stealing.

All I'm saying (IANAL of course) that for many of those items (especially on
places like ebay) it is very hard for the buyer to establish whether the good
is actually stolen or not (receipts and boxes can be photoshopped all too
easy), and he has to rely on a level of reasonable doubt (based on seller
rating, price, provided images, etc) to determine whether he is getting the
good from a trustworthy source.

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A new approach to Re: Itch3: Anti-lost/theft protection

2007-02-28 Thread Attila Csipa
A lot of ideas have been written on anti theft protection, but much of it from 
a geek/user's standpoint, and almost completely forgetting the possible 
ramifications of the suggested techniques. First of all, none of the 
techniques presented PROTECT your phone from being stolen (they fall more to 
the find-your-lost-phone category). Second, in most countries I know of you 
cannot act on your own without the help/presence of law enforcement persons. 
Although this may sound strange and ineffective at first, it makes a lot of 
sense from a police perspective. What would you do if you confronted a 
criminal who stole your phone ? What if he is dangerous ? What if you get 
hurt in the process ? What if the person who has the phone and whom you are 
shouting at/calling a thief is actually innocent and knows nothing of the 
origin of the phone ? Which brings us to the next concern - stolen phones 
usually do not get regularly used by the persons who actually stole them, and 
most certainly not used by their money - their SIMs are just as stolen. They 
might drain your account with expensive calls, but chances are high that the 
phone will soon get sold through ads and/or ebay. If the persons in charge do 
this 'professionally' they will surely flash the phone (the Neo1973 is here 
at a little advantage by not being a widespread/common phone). Thus there is 
no guarantee that you are spending the thiefs money - in fact, it is much 
more probable that you are tracking and wasting an unsuspecting victims 
money. How would you feel if you bought a slightly used Neo1973 only to find 
out that it is sending expensive foreign/roaming SMS-es because the previous 
owner 'forgot' to turn off a silent alarm/anti theft application ? As you can 
see the problem of phone theft is not that simple as relaying coordinates 
back to yourself - a much broader topic must be analysed to tackle this 
issue - and although the GPS might help a little, it is not really a silver 
bullet in this matter.

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Re: A new approach to Re: Itch3: Anti-lost/theft protection

2007-02-28 Thread Steven **

Caveat emptor.  Possession of stolen property is still a crime where I
live, even if you didn't do the actual stealing.

That said, I agree that attempting to rack up a large bill will not
prevent theft nor lead to the return of the phone.  Any anti-theft
mechanisms should focus on locating the phone.  We could maybe have
the option of disabling the phone.  But the only way to disable this
open-source phone would be with some hardware lock.  I don't
particularly like the idea that my phone could be locked.  Even if it
should only happen to a thief, if it has the capability, it could be
abused.  We're treading too closely to the blasphemous idea of
trusted computing.

-Steven

On 2/28/07, Attila Csipa [EMAIL PROTECTED] wrote:

A lot of ideas have been written on anti theft protection, but much of it from
a geek/user's standpoint, and almost completely forgetting the possible
ramifications of the suggested techniques. First of all, none of the
techniques presented PROTECT your phone from being stolen (they fall more to
the find-your-lost-phone category). Second, in most countries I know of you
cannot act on your own without the help/presence of law enforcement persons.
Although this may sound strange and ineffective at first, it makes a lot of
sense from a police perspective. What would you do if you confronted a
criminal who stole your phone ? What if he is dangerous ? What if you get
hurt in the process ? What if the person who has the phone and whom you are
shouting at/calling a thief is actually innocent and knows nothing of the
origin of the phone ? Which brings us to the next concern - stolen phones
usually do not get regularly used by the persons who actually stole them, and
most certainly not used by their money - their SIMs are just as stolen. They
might drain your account with expensive calls, but chances are high that the
phone will soon get sold through ads and/or ebay. If the persons in charge do
this 'professionally' they will surely flash the phone (the Neo1973 is here
at a little advantage by not being a widespread/common phone). Thus there is
no guarantee that you are spending the thiefs money - in fact, it is much
more probable that you are tracking and wasting an unsuspecting victims
money. How would you feel if you bought a slightly used Neo1973 only to find
out that it is sending expensive foreign/roaming SMS-es because the previous
owner 'forgot' to turn off a silent alarm/anti theft application ? As you can
see the problem of phone theft is not that simple as relaying coordinates
back to yourself - a much broader topic must be analysed to tackle this
issue - and although the GPS might help a little, it is not really a silver
bullet in this matter.

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Re: A new approach to Re: Itch3: Anti-lost/theft protection

2007-02-28 Thread Attila Csipa
On Wednesday 28 February 2007 21:29, kkr wrote:
  out that it is sending expensive foreign/roaming SMS-es because the
  previous owner 'forgot' to turn off a silent alarm/anti theft application

 Is the same for car alarm... When you sold something, you do have to do
 the necessary action (in other case, you're too responsive for the
 damage)

It seems I have been a bit too cryptic - I put the word forgot in '' exactly 
because that way a Neo seller can fraud you by _intentionally_ doing this. 
Image the suggestion in a previous message in this context: 

overtaxed calling number (for the profit of the victim). 

If someone sells you a phone with that enabled _on purpose_, so he would get 
both the price of the phone AND some money frauded from the unsuspecting 
buyer (and claim later that he either did not get any money or that the theft 
alarm was not on on purpose). If he does this on a small scale, he could even 
get away unnoticed for months or years sipping a few $ per month from the 
real victim which is in that case the new owner of the phone. That's one of 
the main reasons why proactive theft reactions, especially financial, are NOT 
really an option.

 In this case, when you buy on ebay, you do have to receive the prove
 that the phone is not stolen, in other case (even if I'm not a lower),
 the buyer is too in fault...

Since in our case it is already a second hand item proof of purchase is not 
readily available on most of the ebay items in that category - not many 
customers keep the papers, or even boxes that came with the phone. Sure, you 
can say that it is unwise or even illegal, but many of the used items on ebay 
have absolutely no 'proof of ownership' (do you ask proof of ownership on a 
garage sale or a flea market ?).


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Re: A new approach to Re: Itch3: Anti-lost/theft protection

2007-02-28 Thread Attila Csipa
On Wednesday 28 February 2007 21:44, Steven ** wrote:
 Caveat emptor.  Possession of stolen property is still a crime where I
 live, even if you didn't do the actual stealing.

All I'm saying (IANAL of course) that for many of those items (especially on 
places like ebay) it is very hard for the buyer to establish whether the good 
is actually stolen or not (receipts and boxes can be photoshopped all too 
easy), and he has to rely on a level of reasonable doubt (based on seller 
rating, price, provided images, etc) to determine whether he is getting the 
good from a trustworthy source.

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