Black Friday is all but here, and you can already start snapping up worthwhile tech deals on Amazon. After an early trickle of discounts that began at the start of the month, the good sales are now coming at us fast. You can't wait anymore on what you see, because everyone else is shopping now, too. To make it easier to snap up the best deals, we've sifted through the offerings and pulled out those worth attention. These bargains meet our usual criteria for a good deal: The price is near an all-time low or is a larger discount than usually available.

Early Black Friday deals are already rolling out, with more new sales showing up every day. For 2021, there's concern whether shipping issues will mean less stuff on the shelves for the holidays. As we've already been hearing for months, the global supply chain is seriously backed up with bottlenecks occurring at key points. Hoping to deal with an already difficult situation, retailers stretched out the shopping season as much as they dared, what with shipping timelines stretching to frustrating levels. These supply problems are supposed to be felt acutely in technology, or so the market watchers say.

Smart thermostats do more than automate a fixed heating and cooling schedule. These app-enabled smart home devices make it possible to adjust your thermostat whether you're on the couch, at the grocery store or on vacation -- anywhere your smartphone is connected to a cellular or a Wi-Fi network. Many of these devices also work with Alexa, Google Assistant and Siri now too, giving you yet another way to adjust your thermostat settings without having to stand directly in front of it. Some smart thermostat systems also use smart features like a motion sensor to determine if you're home or away and automatically change the temperature -- both heating and cooling -- for you. Other systems rely on a geofencing radius -- once you get a certain distance from your home, they switch to away mode and then back to home mode when you return.