Digital cash without internet: the difficult promise behind offline CBDCs
The BIS Polaris handbook examined why offline payments require decisions about resilience, privacy, security and local needs.
From the archive · 11 May 2023
A retrospective written for Chain Perspective. It describes the source at that date and does not imply current availability or status.
Reported development: · AI-assisted, source-linked brief
In brief
- Offline payment design reaches beyond a wallet’s user interface.
- The handbook found no single solution suitable for every country.
The development
In May 2023, the BIS Innovation Hub published a handbook on offline payments using central bank digital currency. The work considered resilience, inclusion, privacy and the resemblance to physical cash. It also emphasized that enabling payments without connectivity introduces technology, security and operational decisions that should be considered early, rather than added after the payment system has been designed.
Why it matters
For readers, the practical question is what happens when a connection disappears. A feature advertised as offline must fit the places and people expected to use it. Polaris did not present a universal answer: suitable designs depend on local requirements. Its contribution was to connect the technical choices with responsibility, investment and ongoing operations. The publication was guidance for central banks, not the launch of a consumer wallet.
Sources and verification
Based on an official announcement
Based on the dated primary source. This retrospective does not establish current availability or subsequent outcomes.
- Project Polaris: handbook for offline payments with CBDC ↗Bank for International Settlements · Primary document · 11 May 2023
Prepared with AI assistance from the linked sources. This is not a claim of independent field reporting or human review. How we publish · Report a correction
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