The Russian army was attacked on a temporary barracks in Makiivka (Makiivka) in Donetsk, Udonetsk on the 1st. The Russian side confirmed that at least 89 people were killed and blamed the conscripts for calling their mobile phones and leaking their hiding places to cause trouble.

(Reuters, data photo; synthesized by this newspaper)

[Compilation of Chen Chengliang/Comprehensive Report] A Russian schoolhouse in the Donetsk region of Udon, which was used as a temporary barracks, was raided by the Ukrainian army on the 1st. The Russian Ministry of Defense admitted that at least 89 people were killed. Call your phone to reveal your location.

However, the Russian army seems to have a special liking for smartphones when fighting wars, and has specially developed an app that claims to be able to determine the position of Ukrainian artillery!

The Russian military magazine "Arsenal of the Motherland" (Arsenal of the Motherland) reported that the Russian army has invented a simple method to determine the positions of Ukrainian artillery in the "special military operations area" by using multiple smartphones to determine the location of Ukrainian firing sounds.

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The report pointed out that officers directly involved in combat operations developed an APP (application program) for smartphones with the Android operating system, which can determine the coordinates of the sound source of enemy artillery according to the shooting.

4 sound detectors equipped with smartphones (tablets), located at a distance of 3-6 km from the combat contact line, using the APP can automatically and manually determine when the sound of shooting is detected.

According to the magazine, the time synchronization of the system can be achieved by following messages from the satellite navigation system or by internal synchronization between the phones.

The collected data is sent to a central tablet with a "sound center" program that calculates the coordinates of the target.

The report pointed out that this method cannot provide the accuracy required to determine the coordinates of the enemy's target, and is mainly used to transmit target instructions to the drone team, allowing the drone team to conduct further reconnaissance of the enemy's position.

The report did not mention whether the app has an iPhone version.