Source : metmuseum.org
By : Veronika Doljenkova
Recently in the museum sector there has been a lot of attention given to "Beacon" or Bluetooth low energy (BLE), a technology that addresses the need for a low-cost, easy-to-implement solution for indoor location-based services. What really excites me about this technology is not that it's going to help museums build great mobile apps (we already have one of those!), but, rather, how open it is—that it opens the door for non-programmers to build their own location-based experiences and
share them with others.
 |
Exploring the museum of Egyptian art using beacon technology |
If a museum puts some beacons in its galleries, any device can find them, and any app can use those beacons to trigger content.
EddyBox is an app that makes it easy to develop just these experiences.
As mobile technology is developing, the boundary between the physical and the digital user experience is rapidly disappearing. Visitors who enter enclosed public spaces such as galleries, malls, airports, and museums are expecting to receive a mobile experience that is highly relevant, convenient, and delivered in a timely and seamless manner.
For enclosed spaces with thick walls, such as those in museums, using GPS is problematic. The GPS receiver relies on continuous signal transmission from several satellite sources, so physical barriers such as thick walls can cause significant signal interference. Beacons, although a relative newcomer to the location-technology space, have proven themselves to be a seamless and robust solution for large indoor spaces.
Beacons have already been
tested in diverse industries ranging from museums (Victoria and Albert Museum, Museum of Neons), to retail (Shopkick, Carrefour), to the
entertainment industry (Tulipland,
Coachella, Tribeca Film Festival), and airports (London's Heathrow International Airport).
With such promising case studies, the Met's MediaLab decided to test the potential of this technology for the Museum. Under the leadership of Don Undeen, the initial experiments were conducted in the MediaLab's fifth-floor space.
Beacons
Beacons are small wireless sensors that communicate with Bluetooth-enabled smart devices such as iPhones, iPads or Android by continuously advertising their location using a Bluetooth low energy radio transmitter. In turn, smart devices monitor the received signal strength indication (RSSI) and determine the device's proximity to the beacon. Apple's developer guidelines divide the proximity to the beacon into three states: immediate, near (between one and three meters), and far. Once the user is in the desired proximity range, the corresponding app content is triggered.
A typical beacon, like the Eddybox beacon, is essentially a miniature computer that, together with BLE, may include an accelerometer and a temperature sensor.
The initial beacon experiment in the MediaLab's space demonstrated that beacon technology could provide a valuable locative context to the Met's visitors—including supplementary audio and video content, and descriptions of the objects. Beyond the initial supplementary content, the beacons can be a valuable tool in informing visitors about locations of special exhibitions, libraries, dining venues, and other amenities, as well as alerting visitors about current tours and events happening relative to their location.
From the physical UX experience, however, the experiment in the MediaLab space provided a glass-house experience at best. The initial testing in the actual gallery spaces brought to the surface the host of important environmental factors to consider when working with beacons. These include gallery architecture, human traffic, interference with metal objects, temperature changes, battery life, and the customization of app's interface.
Beacon Battery Life and Temperature
One of the main advantages of beacons is supposedly their fairly long battery life. However, changes in temperature seem to have a noticeable effect on the battery life. For example, moving the beacons from the "ideal" temperature environment at the MediaLab to a considerably colder and less predictable lecture-hall space adversely impacted their battery life.
Placement and Human Traffic
Although just an observation at this point (since not enough evidence has been collected), having a group of people between the beacon and the BLE smart device may interfere with the broadcasting of the beacon set to an immediate or near regimes. The app may either start showing another beacon set to a far-proximity range or start switching back and forth between beacons in the near regime that are in the area.
The effect was more pronounced when testing in the busy area of the Arms and Armor galleries. The same "blinking" effect seems to happen if two beacons in an intermediate/near range regime are placed too close to each other, a possibility which is mentioned in Apple's iBeacon developer tools. A deeper understanding of how possible interferences such as metal and human traffic affect the beacon/device communication will be really important to create the most effective user experience.
Future Directions
Beacons and other BLE-responsive devices, although a recent phenomenon, are quickly gaining momentum across a variety of industries. As the technology is becoming better and more affordable, the Met has many opportunities to use it in order to add to the visitor experience. One route would be to develop, in-house, a
custom app using tools like the Eddybox SDK, with a possibility of eventually integrating it with the Met app. Such an app can be tailored to address both aesthetic UX aspects
and challenges of the actual gallery environment. Since the physical factors such as temperature changes and human traffic seem to affect the capabilities of the hardware, it is important to investigate this phenomenon more thoroughly by recording the signal strength as a function of temperature changes and human traffic inside each gallery space in question to determine the most appropriate position for each beacon. Finally, the possibility of a beacon being hacked and hijacked should be thoroughly investigated as well.
(Read in Details: metmuseum.org/about-the-museum/museum-departments/office-of-the-director/digital-media-department/digital-underground/2015/beacons)