General information about validation
- What should I do if validation is not possible?
- Can I validate a journey for someone else?
- Do I have to unlock my mobile phone screen in order to validate my journey?
- Can I validate my journey even if my phone does not have a signal?
- What should I do if the application does not work when I need to validate a journey?
- How do I know if I have validated my journey correctly?
- Where are the validators?
- How can I activate the NFC function on my mobile?