Re: [Taler] age-restriction is about coins, not currencies

[Christian Grothoff]

On 09.09.21 23:48, Jacob Bachmeyer wrote:
> Schanzenbach, Martin wrote:
>> As proposed in another mail by Jacob another option is to enforce
>> restrictions in the wallet/client only on a per service basis (a
>> whitelist I would assume) or on a restricted good basis (difficult,
>> requires definition and harmonization of "goods").
> 
> The credit card industry has already standardized a system of merchant
> categories.  Perhaps a small addition to the Taler protocol would be
> needed for merchants to state their category code (or "unspecified" and
> the user assigns a category to the transaction) or each user could
> define their own budgetary categories.
> 

Interesting. Do you have any pointer to that list of merchant
categories? I indeed think that might be a good thing to add to the
Taler contract specification.