I will be honest: I used to think these systems were solving an invented problem. Another layer of digital structure for something humans already handle imperfectly but well enough. Then I paid closer attention to how rights and access are actually distributed now: student aid, professional credentials, residency benefits, gated communities, online grants, sanctions screening, payroll-linked rewards, even digital memberships. The pattern is always the same. The value is easy to define. Eligibility is where everything breaks.
Not because qualification is impossible, but because it lives in fragments. One database says yes, another says maybe, a regulator says not across borders, a compliance team says not without records, and the user is left resubmitting the same proof in slightly different formats. At small scale, institutions absorb this inefficiency. At large scale, it becomes expensive, political, and easy to exploit.
That is why something like $SIGN matters, if it is approached as infrastructure rather than ideology. Its real job is not to impress users with sophistication. It is to make qualification portable enough for builders, defensible enough for institutions, and legible enough for regulators.
The people who adopt it first will not be idealists. They will be operators dealing with fraud, duplication, appeals, audit pressure, and administrative drag. That is also the test: if it lowers operational pain without creating new legal or human confusion, it has a chance. If not, it is just another abstraction.
