"Santa's Nice-o-meter" is an online app provided by the website Claus.com that lets children check whether they are on Santa's Naughty or Nice list. In common with most fun online apps or tests, it gives only a vague, generally positive answer, in response to the child inputting his name.
Claus.com provides other lists, tests and emails for children and parents who choose to explore the site or sign up for mailings. To protect children, those under the age of 13 must give a parental email address that will be notified of their activity on the site. However, the details for the Nice-o-meter are not stored in any way, so children can use it freely.