Yes, it is possible but you will need to write some code.
You could add a field of Date/Time type, named LastUpdated, to your table.
Put the field LastUpdated on your form, making its Visible Property equal to
'No' if you do not want your users to see it. If you do not mind your
users seeing the date and time the record was last updated, set its Visible
Property to 'Yes' and set the Enabled Property to 'No' (so that your users
will not be able to edit the field). Then, in the BeforeUpdate event of
your form, insert the following code:
Me!LastUpdated = Now()
hth,