User verification

[wkmor1]

As observation data user, I want to know which observations are from real and known persons, so that I can evaluate the trustworthiness of the data.

• Strong identification (using bank id's etc.)
  • Could be useful for PYHA requests, e.g. land owners
  • Need to get also information about land ownership, which is currently non-free, probably?
• People known personally
• Trust network (Tapani's idea from 2010's)
• Bird ringers