This smart mattress tells you if your partner is cheating.

Sleep tracking is nothing new, but one company wants to track when your mattress is being used, especially if you're not home.

A Spanish-based mattress company Durmet is touting its new Smarttress mattress with what it calls a Lover Detection System, which sends alerts to your smartphone if a partner may be cheating.

While this may seem like a joke, the Smarttress bed, which doesn't come cheap at $1,750, is filled with sensors inside the spring that vibrate when the bed is in use. Not only does the bed pick up on activity, but its built-in speedometer analyzes duration, impact and intensity.

If the bed is in use when you're say, at work, it'll send an alert to your smartphone to let you know suspicious activity is occurring in real time.

While the Smarttress is an extreme step (and pricy) step to take to see if a partner is faithful, commenters on popular site Product Hunt suggest installing cameras instead; or, better, seeing a couples therapist.

In an ad featured on the Smarttress website (video above), the company cites social media platforms such as Facebook and WhatsApp for boosting infidelity rates, particularly in Spain. “If your partner isn’t faithful, at least your mattress is,” the ad states.

But the move is a part of a larger push from companies to incorporate modern technology into household items, including mattresses. In fact, there are models already on the market that produce report cards each morning that highlight how long and the quality of your sleep (and there's even one for kids). But again, much cheaper fitness trackers can now do the same thing. 

Although fitness trackers don't offer cheating detection, that's not to say the Smarttress is foolproof; after all, there are other places to get into trouble besides the bed.