What if the individual demand the "Right to be Forgotten" and all written evidence of them ever being a member wiped from congregation and WT files?
Interesting.
The first two points under article 17 says that the data should be erased unless,
1. the personal data are no longer necessary in relation to the purposes for which they were collected or otherwise processed;
2. the data subject withdraws consent on which the processing is based according to point (a) of Article 6(1), or point (a) of Article 9(2), and where there is no other legal ground for the processing;
the Data protection policy on jw.org says under point 7:
Personal data will not be transferred between branches unless necessary to accomplish the religious or charitable purposes of the organization of Jehovah’s Witnesses, to which all Jehovah’s Witnesses have consented by virtue of their free and willing decision to become and identify themselves as Jehovah’s Witnesses.
A person consents to become a JW by getting baptized and gives right to the WT to collect and maintain data about him. So, technically, how does a JW withdraw his consent? By writing a letter of DA or by getting DF'ed?
So if a person just stops going to the meetings without getting DA'ed or DF'ed, can he still ask the WT to erase data on him?