+1-900-555-0191">Find free information here</a> <a href="tel:+1-900-555-0191">tel:+1-800-555-0191</a> "tel" URIs may reveal private information, similar to including phone numbers as text. However, the presence of the tel: schema identifier may make it easier for an adversary ...
. . . . 11 7.2. Why Not Distinguish between Call Types?. . . . . . . . 11 7.3. Why tel. . . . . . . . . . . . . . . . . . . . . . . . 11 7.4. Do Not Confuse Numbers with How They Are Dialed. . . . 118. Usage of Telephone U...