Bluesmart One Calling itself a “personal travel assistant”, this bag (HK$3,482) adds a unique, app-based lock function. If the bag leaves your side, it locks automatically. Also includes GPS tracking, a built-in battery and digital scales. Available at bluesmart.com . Trunkster Carry-on With a built-in scale in its handle, an integrated 10,400mAh battery for recharging a phone, and a roll-top opening instead of zips, there’s not much this smart suitcase (HK$2,288) can’t do. As an optional extra, you can add a GPS tracker so you always know where it is. Available at trunkster.co . Seven ways to keep your phone, passport and luggage safe on your travels Fugu Travel How about some expandable luggage? Available in grey, green, blue and red, this 33-litre suitcase (HK$2,320) can be used as a compact carry-on on the way to your destination, then expanded to 115 litres and checked in for your return trip. Find it at fuguluggage.com . MOS Pack Great for digital nomads that spend a lot of time working in coffee shops and airports, this backpack (HK$775) has a power strip in its hull that can recharge three gadgets simultaneously via one AC and two USB slots. Find it at mosorganizer.com Travel gear review: wheeled backpacks for trekkers a work in progress STM Velocity Haven You don’t get a battery or any cables here, but this economic, small backpack (HK$775) gets full marks for its neat SlingTech feature. A side pocket designed to discreetly house a battery or a laptop charger can have a cable fed through to two separate compartments for electronic devices. Buy it from distexpress.hk . Samsonite GeoTrakR expandable spinner Worldwide bag-tracking tech is all the rage, so it’s no surprise that mass-market brand Samsonite has included GeoTrakR on this otherwise standard 29-inch four-wheel spinner carry-on case (HK$2,715). The bag’s location is viewable via a free app, with the Bluetooth tag turning itself off during a flight to preserve its 15-day battery. Available at samsonite.com.hk . TrackR bravo This intelligent tracker (HK$232) can be attached to any luggage to give it worldwide tracking. It communicates with TrackR’s Crowd GPS network, with a smartphone app showing your the bag’s exact location. Available at thetrackr.com .