Paywall
A paywall is a method of restricting access to content via a paid subscription. Beginning in the mid-2010s, newspapers started implementing paywalls on their websites as a way to increase revenue after years of decline in paid print readership and advertising revenue. In academics, research papers are often subject to a paywall and are available via academic libraries that subscribe.
Rzeczpospolita (newspaper)
The content published in rp.pl is covered by a metric paywall; access to parts of it is restricted and requires registration or subscription. Gremi Media introduced paywall as the first press publisher in Poland. Its current service provider is MPP Global, a leader in such solutions in the British Isles (for "Daily Mail, The Times", etc.)