1. Innovative book publisher Taschen is going digital with a new series of iPad apps. Among the first up: Yes Is More ($9.99), a comic book-cum-architectural manifesto from the Danish design group BIG.
2. Concerned about health on the road? The iMedjet app (free; iPhone/iPad; Android) stores health records, key contacts, and instructions on what to do in case of different medical emergencies.
3. For an insider’s experience of London, book a room with onefinestay.com (picture, above). The villa-rental agency specializes in posh pads (fancy an ambassador’s residence in Mayfair?) that come with concierge service.
4. Finally, a digital photo frame with a sense of style: the sleek, Android-based DIA Parrot by Nodesign ($500; parrot.com), which uses LCD panels to illuminate and enhance your pictures.
For more of our travel tech picks, see Best Travel Gadgets 2011.