Tours and activities web service Musement will now automatically alert visitors with an offer or ticket when they get close to an attraction.
The idea is that many visitors do not consider buying a ticket for its things-to-do, such as museums or boat trips, until they are in the destination.
But, currently, the emphasis for online ticket sales is either by sending email reminders to the user, or on the visitor actively looking on websites for what to do.
Musement claims to be the first to launch a global service that now sends a push notification to a visitor's mobile when they are, say, 500 metres away from an attraction, offering them a ticket, skip-the-line deal or even immediate access.
The technology is already up and running in more than 350 cities across 55 countries around the world.
It works by geo-locating the user via its mobile application, then performs a real-time check on availability for tickets on the same day and alerts the user via the app of what is on offer.
Attractions that Musement has worked with on the service include the Louvre Museum in the French capital of Paris, Italy's MAXXI National Museum in Rome, and the TW Tower in Berlin, Germany.
The company claims a "previous lack of convenience and on-the-spot booking was losing companies potential customers and revenue".
Visitors often had to "endure long queues or search and redeem awkward mobile vouchers in a time-consuming, often fruitless process", Musement says.
This issue, it claims, was "holding the industry back from growth".
Musement may be the first to roll out a global product of this kind but Expedia is known to have been developing and in the early stages of testing a similar service - something it demoed at its customer conference in the US in late-2015.
The challenge for any type of geo-fenced service (using a user's mobile device to receive alerts and offers) is that it becomes useful, rather than annoying.
Musement, like others considering a similar tool, will need to be able to establish if the user has already booked a product elsewhere (inherently difficult to do) and potentially limit the volume of alerts it sends.
NB:Louvre Museum attraction image by Alexander Nikiforov via BigStock.