Hungarian Instant Credit Transfer (HCT Inst)
The HCT Inst rulebboks and other detailed specification are not yet available for public review.
The HCT Inst rulebooks covers the secondary authentication, sometimes referred as proxy authentication registration and usage mechanisms. These are namely using the account holder's mobile phone number (currently strangely only the European Economic Area mobile numbers to be supported), email addresses, and a government id (tax identifier).
The rulebook also covers the Request to Pay message flow.
The central bank of Hungary (MNB) has publications in Hungarian which could provide an overview of the intended services. Check out our Resources page for links.