Banks, credit card operators and Australia Post will likely be the first businesses to offer identity and verification services after the government fast-tracked their participation in its digital identity verification scheme, to secure support for it in the Senate.

Businesses won assurances on Monday that they will be able to participate in the new digital ID scheme within two years. Ahead of Senate deliberation over the bill on Wednesday, Finance Minister Katy Gallagher also agreed to amendments to secure the support of the Greens, independents – and possibly the Coalition.