Lfty: putting content on a lock screen without ruining the lock screen

A phone maker earns once, at the till. After that the handset is in someone's pocket for two years generating nothing. Intex, like every Indian OEM in 2016, was looking at the one piece of screen it still controlled after the sale — and the lock screen is the piece everybody looks at and nobody visits.

The commercial brief was straightforward: a content and promotion layer, with buying and opting available from the screen itself, programmed by day and by behaviour, with room for several business verticals to sit in it.

The design problem underneath it was harder, and it was not the one in the brief. Nobody installs a preloaded app. There is no download, no rating, no moment where the user agrees to any of this. If the screen annoys them, they don't blame Lfty — they blame the phone. And they cannot uninstall it.

So the whole product rested on one uncomfortable fact: this thing had to earn its place on a screen it had already taken.

A lock screen has exactly one job: get you into your phone. Everything Lfty added was, strictly speaking, in the way of that job. So the constraint I set was that the content had to be free — free in the sense that ignoring it costs nothing. Not one extra tap, not one extra second, not one pixel of the swipe path.

That single rule killed the two directions the brief invited. A full-screen content takeover was the obvious way to sell more inventory, and it made the phone slower to open — dead. An auto-rotating promotional wallpaper looked impressive in a deck, and it replaced the photo of somebody's child with an advert — dead.

What survived was quieter: content that lives in the margins of the screen, above and below what the user came for.

It is a shelf, not a feed, and that was a decision rather than a limitation. A feed asks the user to keep scrolling and keep judging. A shelf — section header, one row, next section header — can be read in a single pass and stops on its own. On a 1GB handset over patchy 3G, it also loads in bounded chunks instead of forever.

The sections are ordered by how quickly each one pays the user back: apps and games first, because installing something is the fastest useful outcome; entertainment next, because posters carry themselves; social last, because it is the section that rewards browsing rather than looking.

I would rather say this plainly than let a portfolio imply otherwise. Lfty was a monetisation product. Brands could buy placement in it, offers carried a call to action that worked from the lock screen, and the content mix was programmed by day and by what the user had been doing.

The design job was to keep the commercial layer inside the same components as the editorial layer — same card, same band, same tap behaviour — so that a promotion could never be louder or harder to dismiss than a news story. That is the part I would still defend. What I would not defend is further down this page.

The working files from 2017 are gone. What survives is three lock-screen mockups and one client slide, and that is what is on this page — no reconstructions passed off as originals. The slide is the agency’s sales material rather than my design work, and it is here because the brief written on it is the thing the design had to survive; the left-panel screenshot is lifted from it. Both carry the real third-party apps and film posters that were live in the product at the time — evidence of what shipped, not work of mine.