Requesting data to populate a form using a logon

[David Taylor]

Hi, Hope someone can help me.
I have a form that calls data from an Access Database. I
want to give users the ability to update their information
within the database. However to maintain security I want
to issue Logons to each person, and once they complete
logon their specific data is presented in the form.

The database that holds all the information also contains
their logon details.

Thank You