Flipper Devices, the company best known for the Flipper Zero handheld hacking gadget, is selling a far less chaotic piece of hardware: a small desk sign that tells people to leave you alone. WIRED’s Boone Ashworth reviewed the Busy Bar, a $250 focus device that doubles as a visible status display, and found a competent gadget with a very specific audience.
The Busy Bar is roughly the size of a sunglasses case, according to WIRED. Its default display shows a red “BUSY” message, but users can switch to other canned labels, including “KEEP OUT,” “OUT TO LUNCH,” and “LOW SOCIAL BATTERY.” It can also act as a digital clock. For now, WIRED said, that clock is the only other app on the device.
Flipper announced the Busy Bar in 2025 and began sales in June, WIRED reported. The company has also published the device’s open source firmware on GitHub, which matters if the product is going to become more than a pricey illuminated desk prop. Flipper says additional features are planned, including a broader app library and more ways to modify the operating system.
A hardware timer with smart-home hooks
The mechanism is straightforward. The Busy Bar has physical controls on top, including a large start and pause switch for its focus timer. WIRED praised the tactile buttons and said the device’s physical controls are a central part of its appeal.
That is the pitch: make focus something you can slap, mount, and see. Phones and computers already include focus modes, and the free Busy app can run without the hardware. The Busy Bar tries to justify its cost by adding a dedicated display, Bluetooth syncing, and Matter support for smart-home automations.
WIRED said the device can connect to a phone or desktop through an app to disable notifications. It can also work with Matter-compatible systems, such as a Google Nest hub or Home Assistant setup, to trigger connected devices. In one test, Ashworth set an automation that switched the Busy Bar into busy mode when his computer microphone was active, flagging that he was on a call.
That setup is not magic. WIRED said the smarter features take some configuration, especially if users want the bar tied into a home automation system. The device can sit on a desk, mount to a monitor, or go outside an office, but it still depends on nearby humans choosing to respect it, which remains a dangerously under-specified protocol.
Better at managing the user than the room
According to WIRED, Flipper says the idea came from CEO Pavel Zhovner, who wanted a way to show he was busy before people entered his office. WIRED suggested that executives or people with private offices may be the cleanest fit for the product.
In WIRED’s open office, the social-signaling part worked less well. Ashworth wrote that colleagues mostly ignored the sign. When he used an “ON AIR” mode outside a studio, the small display was not especially easy to notice across the office. He also noted that even a larger studio sign was sometimes ignored, so the Busy Bar was not alone in failing to defeat workplace interruption culture.
The device fared better as a personal timer. WIRED said its countdown defaults to the Pomodoro technique, using 20-minute work sessions followed by five-minute breaks. A small pill-shaped progress indicator fills as the session runs, giving the user a visible cue that the block of work is advancing.
WIRED rated the Busy Bar 8 out of 10, praising its clicky controls, simple interface, and possible room to grow. The drawbacks were also plain: the display could be brighter, the use case is narrow, and plenty of software already does parts of the job. WIRED listed the product at $249, with a $199 sale price through Flipper at the time of publication.
The sober read is that the Busy Bar is a polished, expensive focus tool for people who want a dedicated object instead of another app. The future app ecosystem may make that more persuasive. Today, according to WIRED’s testing, it is best at telling its owner to keep working, and less reliable at telling everyone else to go away.
This story draws on original reporting from WIRED.
