The information must not be retained by the driver after the text message has been sent, and / or used for any other purpose (such as unsolicited marketing calls).
Ni ddylai'r wybodaeth hon gael ei chadw gan y gyrrwr ar ôl i'r neges destun gael ei hanfon a/neu ei defnyddio at unrhyw ddiben arall (megis galwadau marchnata na ofynnwyd amdanynt).