Matt W. Barrow wrote:

wrote in message
...
Matt W. Barrow wrote:

"Dylan Smith" wrote in message
...
On 2008-03-18, Matt W. Barrow wrote:
The odds of that are millions to one...about like your neighbor having
the
same code for their garage door opener.

In a country with a lot of people, and a lot of cars, million to one
chances happen rather frequently. A few years ago my Dad was just
getting ready to drive off in his car when it locked and the alarm went
off - someone had just parked the same model of car nearby and locked
it
with the remote. Both cars responded to the lock.

You have a million people within 500 feet (the range of a fob/garage door
opened) of you at any one time?

Not relevant.

Completely relevant - it's the basis of how the devices are designed and how
codes are arranged.

I highly doubt anyone ever seriously concidered the implications of being
within 500 feet of a million people -AT ANY ONE TIME- since it would
be physically impossible.


Given trips to malls, the supermarket, etc. in metro areas, it wouldn't
take long to have been exposed to a million people within 500 feet.

The relevance is "at any one time".

Not hardly.

The probability of someone having a matching device is dependent on
the number of exposures to others having such a device.

The probability of it happening within the next 10 seconds is extremely
low.

The probability of it happening within the next 10 years is a lot higher.

The only way to make the probability 0 is to never make more than one
device with a given set of characteristics.

They're LONG odds, not impossibility.

Precisely the point; it isn't impossible, just unlikely.

Further, "a few years ago" such devices had maybe 200 codes and no
preventive logic.

Now, the systems are far more sophisticated.

True, making it even less likely but still not impossible.

Bone up a bit on "risk management".

Bone up a bit on "probability".


--
Jim Pennino

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