Security and privacy

Kept on record. Not kept forever in full.

A purchase register has to prove who sold a phone without turning into a database of everyone’s Aadhaar. This is how Recashy draws that line.

  • ID numbers

    • When a shop records an ID, only its type and last 4 digits are stored.
    • To recognise a repeat seller, a one-way fingerprint of the number is kept (an HMAC-SHA256 digest with a secret key). It cannot be turned back into the number.
    • The full Aadhaar or ID number is never stored anywhere.
  • Verification codes

    • Before a purchase record opens, a one-time code goes to the seller’s own mobile number.
    • Codes expire, wrong attempts are counted, and sending is rate-limited per shop.
    • The code only verifies a number. It is never used to take or send money.
  • Photos

    • Photos of a handset, the seller or an ID are stored outside the public website folder.
    • Only the signed-in shop that filed a record can open its photos.
    • Every time an ID-proof photo is opened, it is written to an audit log.
  • Records

    • A filed record is locked. It cannot be edited or quietly deleted.
    • Corrections are filed as a new record linked to the original.
    • Each record carries the next number in that shop’s register, so gaps are visible.
  • Between shops

    • Each shop sees only its own records, customers and stock.
    • The repeat-IMEI check tells a shop only how many other dealers recorded a handset, never which dealers or who sold it.
    • In the dealer market, other shops see a lot’s handsets and price, not your purchase records.
  • Accounts and connection

    • Shops sign in with Google. Recashy never stores a shop password.
    • All pages are served over HTTPS.
    • Admin access is limited to a fixed list of Recashy staff accounts.

Found a security problem?

Write to support@recashy.com with the details. Please do not test against real shops’ data.

The legal version

Read the privacy policy and terms of use.

Selling a phone? Protect yourself too.

Reset it, sign out of your accounts, and keep your record number.