A woman walks past reading "Kosovo is Serbia and Crimea is Russia" in the Serb majority north of Mitrovica, Kosovo.
Serbia and Kosovo have settled for the movement of citizens across their border, the EU said.
"We have a deal," EU foreign policy chief Josep Borrell tweeted.
Under EU negotiations, Serbia agreed to abolish entry/exit documents for Kosovo ID holders, while Kosovo agreed not to introduce them for Serbian ID holders, he added.
Also the two countries are yet to agree on the contested use of Serbian car number plates issued in north Kosovo.
In 2008, ethnic-Albanian Kosovo declared independence from Serbia, which never recognised the move and continues to treat Kosovo as part of its territory.
Relationships between the Albanian-dominated government and the Serb minority have been strained for years. Late last month, the tensions boiled over into civil disobedience.