Android: Open this link in Chrome, tap the three-dot menu, then Install app or Add to Home screen.
iPhone: Open this link in Safari, tap Share → Add to Home Screen, and enable Open as Web App if shown.
You will still need the Guard ID and password provided by Audiforce.
Computer preview: This localhost address works only on this computer. Guards need the company's online HTTPS app link to install on their phones.
Security. Discipline. Trust.