Fox 40 is a family-owned business based in Hamilton, Ont. that created the electronic whistle about a decade ago. Up until COVID-19 hit, the company’s largest order was for 3,000 electronic whistles.

Now, it’s received orders for more than 50,000 whistles, with orders from the NFL, the NCAA and the NBA.

The company has created a miniature version of the device and is working on a rechargeable version.

But not everyone is sold on the device. Concerns have been raised that the electronic whistle could be pressed accidentally, and others have raised concerns about the volume not being strong enough.

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