The letter has some choice words for the company:
We challenge you to commit publicly to these principles.”
* Purpose Limitation
* Data Quality
* Data Minimisation
* Right to Object
(Google could) Provide additional and precise information about data that have a significant impact on users (location, credit card data, unique device identifiers, telephony, biometrics)
Many people would not expect credit card information to be captured for marketing purposes, and we look forward to Google clarifying this point.