It is now (or soon to be) possible to purchase a bus ticket with you bank card (Visa/MC). The cost will be 2.50€, rather than the 2€ when using an Easy card or a configured smartphone, but will make traveling easier for many. Buses in Paris should already be equipped, those in service outside Paris will soon be equipped.
The métro/RER turnstiles will be similarity modified to accept bank cards but transition will not be completed for several years.
Article in Le Parisien in French only and behind a paywall.
https://tinyurl.com/wxu3uxpu