A user of Uber Technologies' ride-hailing services suing the company in a trial court for personal injuries, but later said she assented to have disagreements heard by an arbitrator after mistakenly making a routine click on her cellphone, is bound to the latter forum, New York's top court said in a split decision on Monday.

The New York Court of Appeals affirmed two lower courts' rulings that said an agreement to arbitrate existed between the plaintiff and San Francisco-based Uber and that the company did not run afoul of ethics rules by contacting the plaintiff.