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- The app will take photos of the receipts. These are essentially equivalent to scans, which are in some places already accepted as proof-of-payment
- The app will leave the photos taken nicely categorized in folders in the user’s dropbox, making transferring the photos to a third party trivial
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- The app will alert the user when the data has been securely placed in the user’s dropbox, such that he knows when the process has been completed and it is safe to discard the physical receipt. Once in the dropbox, the data is securely backed up and version-ed, making data-loss extremely unlikely.
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