userID name generator and length

23 May 2006 - 1:23pm
1247 reads

Hi all,

I would appreciate if you could all share your insights on the following question:

What is the best practice for generating user ID (userID at and the ideal acceptable length of userID?

The user ID is generated for the consumer-level mobile device.
As a rule of thumb, I am setting to what is visible on the text field (15char max) and maybe 5 characters more to attach server generated "number" if the user ID already exists.
Users do not give any first name/last name before setting userID unlike Web service account creation.

So the current scheme is <user generated name> + number (5 digits max) if the ID already exist.
The service is in use for Europe.

Have you encountered any other scheme to create unique ID a part from attaching number at the end?

Thank you very much


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