Marriott International last month joined the growing number of hotels and chains that provide guests with the technology to check in to their airline flights and print boarding passes. The company will offer the service at its Marriott- and Renaissance-branded properties.

By mid-July, more than 180 properties will have the technology, with full installation at all 400 U.S. and Canadian hotels in both brands complete by the end of September.

The single-purpose lobby computer systems can only be used for airline check-in and boarding pass printing. The service is free to guests. Other Internet services are available in hotel business centers or through public space WiFi or in-room high-speed access.