Yes, Slice fundamentals are around the seven key principles of GDPR policy - Lawfulness, fairness and transparency, Purpose limitation, Data minimization, Accuracy, Storage limitation, Integrity and confidentiality (security), and Accountability.
When you join Slice you are assigned a Slice ID, this ID allows your data to be associated without the need of a direct association to your personal details such as phone number or email.
Slice downloads your activity data and stores this data in your chosen Online file storage solution, Google Drive for example. This data is then synced with Slice's ChatMatch engine.
Brands are able to create chat requests against activity data, not against personal data, for instance, if you are looking at buying a new car (your activity tells this story), brands can run campaigns targeting that kind of activity.
Once you are matched with a brand, they won't know who you are, if you accept the chat request, you enter a private chat room with the brands representative, even at this point you are anonymous to the brand, it's up to you if you want to give out your personal details or not, either way, if you reply (with or without giving your details) you get paid, it's that simple.
Your activity data and Personal data (Name, Email, and Phone number) are stored in completely separate environments.
If you want to delete Slice, you can do that easily from within the profile menu. You can also delete the slice folder in your storage solution such as google drive, or simply un-link at any time.
You are always in control.