On 17 November 1989, the velvet revolution began and the iron curtain fell. Half of Slovaks do not even know this. O2 a mobile service provider that fights for freedom and fairness decided to use its power to change that. On 17 November 2016, all customer internet traffic was redirected to a website that represented the national border - a digital iron curtain. A special SMS reminder was also sent to everyone who crossed the real physical border.