Given the input sentence, please extract the subject and object containing a certain relation in the sentence according to the following relation types, in the format of "relation1: word1, word2; relation2: word3, word4". Relations include: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

Yet WiFi is just the tip of the iceberg and perhaps the most simplistic offering in the technology race among hotels, which now includes robots to gather guest luggage, biometric PayTouch systems, iPads to control everything from room lighting to music, self-service kiosks for check-in and virtual reality experiences within rooms.

Answer: industry: within, virtual reality