The Pushover User/Group Verification API allows developers to verify user keys, that the user's account is valid, and that there is at least one active device on the account. This is an optional step in the process of collecting user keys from users of the developer's application. The validate call will return a 1 if the user is valid and a 0 if they are not, with an optional parameter for detailing the specific error.
The following is a list of how-to and tutorial content that matched your search term. ProgrammableWeb's how-to content comes from two sources; full-blown tutorials that we publish ourselves and other highly relevant tutorials that we find elsewhere on the Web. This list represents on combination of both tutorial types and if you go to ProgrammableWeb's API University, you'll not only be able to find more, they are organized based on your role (API providers or developers who consumes APIs). If you know of a tutorial that would be of interest to the ProgrammableWeb community, we'd like to know about it. Be sure to check our guidelines for making contributions to ProgrammableWeb.