On September 11, 2026, the Keyboard Market Organizing Committee launched the official website for “Keyket 2027” and began accepting applications from exhibitors.
Keyket 2027 is an exhibition and sale event focused on input devices—primarily custom-built keyboards—scheduled to take place on March 27, 2027, on the 4th floor of the Tokyo Metropolitan Industrial Trade Center, Hamamatsucho Building.
In this call for proposals, the regulations regarding devices that require a power source have been revised.
Of particular note is the ban on the display and sale of items that require the use of rechargeable batteries.
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Keyket 2027 Event Overview
| Item | Details |
|---|---|
| Event Name | Keyboard Market Tokyo 2027 |
| Abbreviation | Keeket 2027 |
| Date | Saturday, March 27, 2027 |
| venue | Tokyo Port City Takeshiba Office Tower Tokyo Metropolitan Industrial Trade Center, Hamamatsucho Building, 4th Floor (entire floor) |
| Call for Exhibitors | Registration is now open |
| Event Format | Input Device Exhibition and Sale |
The page released this time is primarily intended for those considering exhibiting at the event.
For details on exhibition categories, fees, application requirements, and more, please visit the official Keyket 2027 website.
Information on Exhibiting at Keeket 2027
Devices that require rechargeable batteries are prohibited from being displayed or sold.
At Keeket 2027, new restrictions have been imposed on exhibits that require a power source.
According to the official guidelines, “the display and sale of items that require the use of rechargeable batteries” .
The term “rechargeable battery” as used here refers to lithium-ion batteries, lithium-polymer batteries, and other types of batteries that can be recharged and used repeatedly.
In recent years, as wireless connectivity has become the norm for DIY keyboards, there has been a rise in wireless split keyboards that incorporate rechargeable batteries.
For groups that had planned to exhibit the relevant products, it may be necessary to review their exhibition content and sales methods.
Not all rechargeable wireless keyboards are eligible.
It is important to note that the official wording is not “devices capable of accommodating rechargeable batteries,” but rather “items that require the use of rechargeable batteries.”
Therefore, it is not necessarily the case that all such products—including keyboards that operate via USB power and products that can be displayed with their rechargeable batteries removed—will be uniformly prohibited.
On the other hand, if a device cannot operate without a built-in rechargeable battery, or if you are considering displaying or selling it with a rechargeable battery installed, this may violate the regulations.
If you are unsure whether a specific product qualifies, we recommend checking with the Keyket Organizing Committee before submitting your application to exhibit.
Below is an excerpt from the guidelines.
Examples of Items Permitted for Display and Sale
- A keyboard designed to operate on primary batteries; while operation on rechargeable batteries is neither guaranteed nor recommended, there is no way to prevent the purchaser from connecting a rechargeable battery of the same shape as a primary battery.
- This keyboard is designed to operate using power supplied by primary batteries or the connected device; while operation using rechargeable batteries is neither guaranteed nor recommended, the possibility that a purchaser might connect a rechargeable battery through disassembly, modification, or other actions cannot be completely ruled out.
Examples of Items Prohibited from Display and Sale
- Items that contain or come with a rechargeable battery
- A keyboard designed to operate exclusively on rechargeable batteries, not intended to be powered by primary batteries or connected devices, that does not include a built-in or bundled rechargeable battery, and for which the purchaser must purchase rechargeable batteries separately
Potential Impact on the Exhibition of Wireless Split Keyboards
At Keyket, we have showcased numerous wireless split keyboards and trackball-equipped input devices created by independent designers.
Some of these products contain built-in small lithium-polymer batteries.
As a result, this change is likely to have a significant impact on some DIY keyboard communities.
Realistically, I get the feeling that there are probably many DIY keyboards that would require a design change from lithium-polymer batteries to primary battery power.
Recently, I’ve also been paying close attention to the emergence of DIY keyboard components that comply with Keyket regulations, such as the “XIAO nRF52840”—which is frequently seen in DIY keyboard designs—and the “XELBO Prototype (Nogikesuya),” which features a similar keypad layout and can be powered by dry-cell batteries.
KawamuraIt’s great that, with a footprint equivalent to the XIAO nRF52840, it makes it easier to achieve low-power operation using a single dry-cell battery.
It looks like we can make the circuit board smaller, too.
Summary
That concludes our announcement regarding the start of applications for circle exhibitors at Keyket 2027.
The restrictions on the use of rechargeable batteries were also mentioned during the closing segment of the “Tenkaichi Keyboard Waiwai Kai Vol. 11” event held in June 2026, and the page titled “Restrictions on Circle Exhibits ” was published on the same day.
With the announcement of the guidelines for this round of club recruitment, the requirements seem to have become clearer.
In recent years, rechargeable wireless split keyboards have become increasingly popular and have garnered attention here at Keiket as well.
While this appears to be a change intended to improve safety, clubs that use these devices will likely need to reevaluate their power supply methods and display setups.
- Originally published:
- Last updated:
- Method of coverage: See official manufacturer release and official SNS postings
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- Conflicts of Interest: Product provided: None Monetized links in this article: None
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