About Section 57, the judgement says (Below excerpt from livelaw.in)
Section 57 of the Aadhaar Act refers to the use of Aadhaar data by any “body corporate or person” to establish the identity of an individual. Justice Sikri, in his judgment, found this section to be unconstitutional. It was under this provision that private companies like Paytm and Airtel Payments Bank sought Aadhaar details from customers.
PS>> Congress Party seems to have a view on section 57 as well, and they are in agreement with us!