Has someone been sleeping in your bed? Whether it was Goldilocks, one of the three bears, or an illicit lover, the Durmet Smarttress(Opens in a new window) will keep you updated.

The Spanish-made smart mattress sends an alert to your phone whenever someone is using your bed “in a questionable way.” The 24 ultrasonic sensors in Durmet’s “Lover Detection System” identifies activity—exceptionally restless sleep, copulation, jumping on the bed—and notifies you, wherever you are.

The app—downloadable now on Android, coming soon to iOS—indicates speed, intensity, and impact per minute, and visualizes real-time pressure points in the mattress. Because those are the details you want in your arsenal when you discover your significant other is having an affair.

“Smartness combines technology and comfort,” Durmet spokesman Jose Antonio Muíño said in a statement. Amidst studies that suggest Spaniards are the most unfaithful in Europe, the company teamed with an advertising agency to “reassure men and women not only during the night, but also during the day when they leave their home to go to work.”

The mattress will start at €1,500 ($1,699); an official release date has not been announced, but Durmet confirmed to PCMag that the product will be available globally. Interested (i.e. paranoid) buyers can sign up to receive email updates when the mattress goes on sale.

Though it may seem like a late April Fools’ joke, Durmet is in fact a real company, which has been making sleep-related products since 2012, and boasts 10 employees producing about 70 mattresses a day. Still, people are finding it hard to take the firm seriously.

“This would’ve been great for 1st of April,” one YouTuber wrote.(Opens in a new window) And, as a number of Product Hunt commenters pointed out(Opens in a new window), it doesn’t take a sensor-laden bed to catch someone in the act: “Just install cameras folks,” one user wrote.

“If you really think you need this, you should probably get a new partner,” another suggested.

To see what PCMag’s Dan Costa and Sascha Segan think about this mattress, check out the video below.