This may be feasible in Tim Berner-Lee’s vision of Solid and data pods. I’d only do it if I control access to data, and can allow an auditable one-time no-copy

This may be feasible in Tim Berner-Lee’s vision of Solid and data pods. I’d only do it if I control access to data, and can allow an auditable one-time no-copy access to get 0.X% off my mortgage. But no handing over data to banks between banks / social media companies.