If I filed a claim, am I required to include my Social Security Number (SSN) when registering in iMatchSkills? June 29, 2021 21:29 Updated If you filed, or will be filing, an unemployment claim, you must use your Social Security Number when registering. Related articles Why did I get a letter about registering in iMatchSkills? What will happen if I do not complete my iMatchSkills registration? What is iMatchSkills? What is a “work-seeking activity?” I forgot my iMatchSkills password. How can I get it reset?