title: How to tell if a user has updated a profile field in Drupal 7
body: <p>I am trying to determine how in drupal 7 I can programmatically tell if a user has updated a custom field in their profile within the past 24 hours however looking through the tables I can't seem to find any field with that information does anyone have any ideas?? Essentially I need to pull this information out during a batch job that run onces a night and updates other systems based upon the information in drupal. If someone can think of a better way todo this it would be appreciated. thanks for any help you can provide</p>