Warn user when issuing identical transaction - Idempotency Key Support

[kings-joy]

Hi,
I am using bloom as a recommended wallet for online payments.
Payments are initiated using a deeplink that has all information about transaction prefilled.
It would be good idea if deeplink and wallet had support for Idempotency Key so that when User clicks on the same link twice he is warned that there is already issued transaction with same key.
This would prevent issuing same transaction twice on accident.
So deeplink could look like:
bloom://wallet/sendTransaction?address=iota1abc&tokenId=abc&tokenAmount=1&idempotency_key=unique-string

Thank you