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DATA-PROTECTION  January 2007

DATA-PROTECTION January 2007

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Subject:

Re: School fingerprinting: Warning: likely to r aise blood pressu r e

From:

"Griffiths, Ian" <[log in to unmask]>

Reply-To:

Griffiths, Ian

Date:

Fri, 19 Jan 2007 10:42:18 -0000

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (231 lines)

No the stored number is internal to the system.  Finger is scanned each
time which gives speed and accuracy, which is the main reason to go with
it.  Perhaps books.  I was reading between the lines of the IT
implications :-)

-----Original Message-----
From: This list is for those interested in Data Protection issues
[mailto:[log in to unmask]] On Behalf Of Scourfield, Brenda
Sent: 19 January 2007 10:39
To: [log in to unmask]
Subject: Re: [data-protection] School fingerprinting: Warning: likely to
r aise blood pressu r e


I'm afraid I misunderstood. I thought the number generated by the
fingerprint would be produced on some sort of id card, which I assumed
could be done with the UPN. I didn't realise they would have their thumb
scanned every time. Wasn't it for library books though, not dinners ?
Maybe I've missed some of the posts - if so,  I apologise.

Brenda Scourfield
Team Leader
I.T. Division
Pembrokeshire County Council
County Hall
Haverfordwest
SA61 1 TP
 
Tel 01437 775380

> -----Original Message-----
> From:	This list is for those interested in Data Protection issues
> [SMTP:[log in to unmask]] On Behalf Of Lee Gardiner
> Sent:	19 January 2007 10:32
> To:	[log in to unmask]
> Subject:	Re: School fingerprinting: Warning: likely to r aise
blood
> pressur e
> 
> Also not forgetting the fact that most kids can't remember their PE 
> kit let alone a unique reference number!  Now if it was a friend's 
> mobile number...
> That's a different story!  TGIF
> 
> Lee
> 
> -----Original Message-----
> From: This list is for those interested in Data Protection issues 
> [mailto:[log in to unmask]] On Behalf Of Griffiths, Ian
> Sent: Fri 19 January 2007 10:26
> To: [log in to unmask]
> Subject: Re: [data-protection] School fingerprinting: Warning: likely 
> to raise blood pressur e
> 
> Presumably because the issue is not robustness of the system or even 
> how integrated the school is with the wider national systems. I think 
> the school will have chosen to go with this because it speeds up 
> dinner time.  The similarity in the notion of a unique number is a 
> little inaccurate.  The UPN
> has only very rudementary modulus integrity checks and I wouldn't want
to
> use that for authenticating a student - its too easy to guess.
> 
> The fingerprint number I would suspect is generated as a result of a 
> one-way hashing algorithm which is designed not to be decrypted.  
> These are actually
> not unique - there is a very small possibility that two distinct
inputs
> would cause the same number to be generated.  This is so minutely
small
> that
> it would not be a worry for one single school.  It is fairly standard
> practice in systems like this to do this as you only store the hash,
not
> the
> number.  You only need run the algorithm again when your pupil returns
the
> next day and if the result is the same as the one you stored, you give
> them
> lunch.  Generally this would be done for passwords so that the
password is
> not stored and cannot be reverse engineered from the hash.  Less of an
> issue
> here as the number is no use anyway and that itself is the result of
some
> maths on a picture, which is very lossy indeed in terms of the amount
of
> data that is discarded in capture.
> 
> The above paragraph of course is largely irrelevant to users.  I 
> suspect they've been told this as it sounds fancy and will allay their

> fears of being cloned.
> 
> Regarding the cost of fingerprinting, I'm sure there is a case for 
> reducing the staff time in administering such things and I would quite

> strongly argue
> that pressing your finger on a plate is a lot quicker and less
error-prone
> (and therefore quicker) than asking 9 year olds for a
> 13 digit number which the staff then type in somewhere.
> 
> Ian
> 
> -----Original Message-----
> From: This list is for those interested in Data Protection issues 
> [mailto:[log in to unmask]] On Behalf Of Scourfield, 
> Brenda
> Sent: 19 January 2007 09:42
> To: [log in to unmask]
> Subject: Re: [data-protection] School fingerprinting: Warning: likely
to
> raise blood pressur e
> 
> 
> I'm not in the education sector but why don't they use the UPRN 
> (Unique Pupil Record Number) that will stay with the child for the 
> length of his/her education. Saves the cost of fingerprinting.
> 
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************************************************************************
**************************************
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