The Repentir app allows gallery visitors to view the hidden layers beneath a work of art.
Courtesy Jonathan Hook
Your gadgets

New app reveals painting's past with a swipe

Happiness Machine
Brendan Dawes
printing

Happiness Machine prints out Internet joy on demand

Fly Tweet
David Bowen
Twitter

Tweeting houseflies create buzz on Twitter

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Rain Room
Press Association / YouTube
Art

Walk in the rain without getting wet at new art installation

File photo of Christie's
EPA
innovation

Computer classifies paintings like an art critic

Peter Moosgaard
Peter Moosgaard
3-d-printing

Hermit crabs move into 3-D printed Guggenheim-shaped shell

Jonpasang
Jonpasang
Art

Mind-bending room-sized display uses foam blocks as pixels

Ars electronica
Ars Electronica
drone

49 drones light up the sky in art installation

The Orvillecopte
Reuters
helicopter

Dead cat copter: Art or 'macabre' pet send off?

Google
Ben West / Felix Heyes
design

1,240-page dictionary uses Googled images instead of words

GIA robot in action
Daniel Jay Bertner
innovation

Artsy robot reacts to you watching it

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Patterned by Nature
Hypersonic Design & Engineering
Art

90-foot LCD sculpture mimics patterns of nature

WALLYGPX Angry Birds
Michael J Wallace
gps

Using a bike, GPS and the streets of Baltimore to create game-inspired art

innovation

Tech moves still life painting

e3

The art of video games at E3

Video games

Kiss Controller turns tongues into joysticks

surveillance

Candid camera, in his head

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