Comment by gitanovic

Alas being it not as anonymous as actual cash, I wonder how it preserve privacy.

From the FAQ https://www.taler.net/en/faq.html

Taler supports push and pull payments between wallets (also known as peer-to-peer payments). While the payment appears to be directly between wallets, technically the operation is intermediated by the payment service provider which will typically be legally required to identify the recipient of the funds before allowing the transaction to complete.