There are only around 1.8 million that are not directly dependent on state payments in some shape or form.

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All that makes it heavily dependent on the screen technology, not just its form but also its durability.

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If you do not have a Social Security Number for your dependent, and your dependent qualifies for a Social Security Number, you need to file a form SS5, Application for a Social Security Card (downloads as a pdf), with the Social Security Administration (SSA).

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