On 12/12/2015 6:18 PM, John Levine wrote:
> How many apps do you use on a phone or tablet?  Lots and lots of them
> use your mobile phone number as the identifier, since everyone knows
> his own number, 


The problem is that everyone does not know /every else's/.  That's the
usability issue.  Acquisition and recall by /others/.

d/

-- 
Dave Crocker
Brandenburg InternetWorking
bbiw.net

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