Switzerland’s casinos can’t choose an online gambling technology partner that has had any dealings with Swiss punters in the past five years, according to the government’s latest regulatory proposal.

In June, Swiss voters overwhelmingly voted in favor of the country’s new gambling law, under which only local casino operators can offer online gambling products. The law also requires Swiss internet service providers (ISPs) to block the domains of international sites currently serving Swiss punters without local authorization.

The new law is due to take effect on January 1, 2019 and Swiss regulators are currently holding a consultation with stakeholders on the nuts and bolts of how local casinos can take their action online. Chief among the topics being discussed are which technology providers will be eligible to assist the casinos in this endeavor.

Various models are being discussed, including pure game-licensing arrangements with foreign providers, allowing the international firm to supply everything but the casino brand, or joint ventures in which the international firm would be an active partner in the online operation.