One password,eleven machines.

import { useTrustSig } from "@trustsig/react";

const { getResponse } = useTrustSig();
const { token } = await getResponse();

import { TrustSig } from '@trustsig/server';

const ts = new TrustSig({ secretKey: process.env.TRUSTSIG_SECRET_KEY });

app.post('/session', async (req, res) => {
  const token = req.headers['x-trustsig-response'];
  const { identity } = await ts.verifyRemote(token);

  // degraded marks an id a large cohort shares, so it names a crowd.
  if (identity.degraded) {
    return openSession(req, res);
  }

  // Your table: one row per machine per account, keyed on the id.
  await seats.record(req.user.id, identity.device_id, {
    first_seen: identity.first_seen,
    returning: identity.returning,
  });

  const seen = await seats.distinctSince(req.user.id, '30d');

  if (seen.length > SEAT_LIMIT) {
    return flagForReview(req.user.id, { machines: seen.length });
  }

  return openSession(req, res);
});