Martin Bailey - Author of Technology and Marketing Books

Polk may not be a brand that is immediately familiar when considering a Bluetooth speaker, but they are releasing an interesting range of devices. The Boom Swimmer Duo is a small, rugger, portable speaker with a twist – literally - whose sound belies its diminutive size.

In recent years home security products have dropped both in price and ease of installation, so keeping an eye on your property from wherever you are has never been simpler. This review of the Y-Cam HomeMonitor HD Pro also walks you through the installation process.

In 2014 the original Tile tag started shipping. This small Bluetooth tracker could be stuck on any device such as keys, bags or glasses cases and be located via your phone. I covered it in The Useful Book of Gadgets, Gizmos and Apps. Now there's a new kid on the block, the Tile Mate, which is smaller and lighter than its predecessor.

We all love ‘iOS update day’, which can feel like you got a free phone upgrade. However, newer functionality often puts a strain on older handsets, with everything taking that little bit longer and even noticeable lag creeping in when moving between screens. Although iOS doesn’t allow as much tweaking as Android, there are a few things you can do. Martin Bailey, author of The Useful Book of Gadgets, Gizmos and Apps shows you some little-known tips and tricks.

If the heat wave is leaving you a little hot under the collar why not turn to tech to help keep you cool?

I've always been a fan of very small wallets that you can lose in a front pocket rather than bulging out of the rear, and with RFID skimming becoming more of an issue I was interested to come across the Dutch manufactured SECRID RFID blocking wallet. These wallets are designed to shield your cards when inside, but allow you to easily remove them using a trigger at the bottom of the wallet.