02 – Recommendations

Wayfinding Smartphones #

Situm is compatible with all device models. The only difference is that the experience will be better on devices with the sensors we recommend in the previous section.

Tracking Smartphones #

For tracking use cases, whether in the industrial or security field, it is recommended that the devices meet the following requirements:

  • Sensors
  • Battery > 5000mAh.
  • In the case of industrial use, it is recommended that they are rugged telephones adapted for industrial environments.

Situm Support validated Android smartphones #


The following mobiles are some of the models that are used by different customers for Tracking:

ModelOSBatteryGyroCompassAccelerometerBarometerRuggedWiFiSpain price
BV6600Android 108580 mAhYesYesYesNoYes5 GHzFrom 180€
BV4900 pro Android 10 5580 mAhYesYesYesNoYes5 GHzFrom 140€
Motorola G9 PlayAndroid 10, upgradable to Android 115000 mAhYesYesYesNoNo5 GHzFrom 200€
Samsung Galaxy M21Android 10, upgradable to Android 11 6000 mAhYesYesYesNoNo5 GHzFrom 220€
Samsung Galaxy Xcover 5Android 113000 mAhYesYesYesNoNo5 GHzFrom 210€

If the building network does not have 5 GHz, 2.4 GHz smartphones can be used:

ModelOSBatteryGyroCompassAccelerometerBarometerRuggedWiFiSpain price
Motorola G8 PowerAndroid 10, upgradable to Android 11 5000 mAhYesYesYesNoNo2.4 GHzFrom 185€
Samsung Galaxy A21sAndroid 10, upgradable to Android 11 5000 mAhYesYesYesNoNo2.4 GHzFrom 220€

How can you carry a smartphone? #

Situm’s location technology is designed to locate people walking with their mobiles in their hand. However, unlike other indoor positioning technologies, it is also able to operate robustly in the pocket, on a vehicle, etc.

Walking with the phone in the hand #

This is the default and preferred mode of operation for wayfinding. As shown in the following figure, the user carries the smartphone in his hand, with the screen turned on and facing upwards. The smartphone is facing in the user’s walking direction.  

Results are optimal in this situation, usually achieving average accuracies of 1-3 meters. Unlike other location technologies, Situm is also robust against the following user actions:

  1. While standing still, the user is talking on the phone, typing, swinging the smartphone, etc.  Situm is specifically built to detect those situations and distinguish them from the real user movement, enhancing accuracy and robustness. 
  2. Wayfinding while the user moves the phone and changes its position and orientation. As long as the user keeps walking, Situm will be able to correct the deviations introduced by those actions. Sometimes, these actions may result in a momentary accuracy loss (5-20 seconds).

On smartphones that have a magnetometer sensor, it is important to take into account that Situm can not operate correctly if the user walks around with the phone in horizontal orientation (see next figure). In this case, the smartphone’s orientation with respect to the North does not match the user’s orientation, reducing the accuracy of the positioning estimate. If the smartphone does not have a magnetometer, this issue does not exist.

Walking with the phone in the pocket/backpack #

Situm also works perfectly when the smartphone is not in the hand of the user, but in her pocket/backpack/belt. In this case, the accuracy is 1-5 meters on average. This is a bit less than in the ideal case (smartphone in the users’ hand), but nevertheless more than enough to enable tracking use cases: real-time workforce monitoring, heatmaps, etc.

Vehicle tracking #

Situm is also able to track vehicles both indoors and outdoors. The average accuracy is usually 5-15 meters and the typical use case is forklift / AGV tracking in warehouses or industrial plants.

Smartphone cases #

Smartphone cases are typically used in tracking use cases (e.g. security staff positioning). If you want to use them, please pay attention to the following considerations:

  • We advise against the use of smartphone metallic protective covers since they alter the sensor measurements of the device and favor internal heating.
  • In order to avoid overheating, we strongly recommend using a belt case to carry the smartphone.
  • The belt case must be a little bigger than the smartphone.
  • For correct use, the screen of the smartphone should be oriented towards your body. The top part of the smartphone must be in the top part of the case.

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