> Universal basic income (UBI), also called unconditional basic income [...] is a sociopolitical financial transfer concept in which all citizens of a given population regularly receive a legally stipulated and equal financial grant paid by the government without a means test.

Adding a means test to ensure that only some people receive the income would make it non-universal. You're describing a classic unemployment welfare system, but proponents of UBI argue that a universal income is simpler to administer and creates fewer perverse incentives.