Privacy Policy

Product: Screen Blackout for Windows (Stream Deck plugin for Windows) · Provider: GRAMSHIFT (Tokyo, Japan) · Last updated: 2026-10-01

Summary

The plugin sends nothing anywhere. It covers monitors with black windows, turns the screens off, and locks, sleeps, hibernates or shuts down the PC when you ask it to. It does not send anything about you or your PC to GRAMSHIFT or anyone else. It has no account, no online service, no analytics and no telemetry, and it makes no network requests. It does not look at what is on your screen.

What the plugin does on your PC

It starts one helper process: Windows PowerShell, which is part of Windows, running a small piece of code that comes inside the plugin. When it starts, Windows PowerShell compiles that code, which briefly creates temporary files (the code only) in your Windows temp folder. It runs as your Windows user and never asks for administrator rights.
The helper reads the list of your monitors (their Windows device names such as \\.\DISPLAY2, the names the monitors report, their positions and sizes) to show them in the key's settings and to place the black windows.
Blackout Monitor puts plain black windows over the monitors you chose. They are not pictures of your screen; nothing is captured.
Screens Off, and the Sleep Timer at zero, ask Windows to turn the monitors off, lock the PC, sleep, hibernate or shut down, as you set the key. To sleep, hibernate or shut down, the helper turns on the standard Windows permission to shut down for itself (every program run by you may do so).
The helper ends when the Stream Deck app closes, when the plugin stops, or when nothing needs it for a minute; its black windows end with it.

Where data goes

Data	Where it is processed	Stored by the plugin?
Key settings (label, the chosen monitor and the name it had when you chose it, the mouse option, the lock option, timer steps and what happens at zero)	Saved by the Stream Deck app on your PC, like the settings of any other key	Only in your Stream Deck profile on your PC.
The list of monitors	On your PC, in memory	No.
A running sleep timer	On your PC, in memory	No. It is never saved, so a restart cancels it.
Technical log	The Stream Deck plugin framework writes a small log file (mainly connection errors) in the plugin's folder on your PC.	On your PC only. It is not sent anywhere.
Anything sent to GRAMSHIFT servers	—	Nothing. The plugin has no server of its own and makes no network requests.

Purchases

The plugin is sold on the Elgato Marketplace. Purchases, payments and licenses are handled by Elgato (Corsair) and its payment provider under Elgato's own terms and privacy policy. GRAMSHIFT never receives card details. If Elgato provides us with sales records (for example the date, country and amount of a sale), we use them only for accounting and tax.

Support requests

If you contact us, we receive what you choose to send (for example your email address, your message and any screenshots). We use it only to answer you. Email to contact@gramshift.com is forwarded by our email forwarding provider (ImprovMX) to a mailbox hosted by Google (Gmail), so those providers process support emails on our behalf. Please check screenshots for private content before you send them.

Our role and legal basis

The plugin works only as a tool on your own computer: GRAMSHIFT does not receive or process anything from it. For sales records and support emails, GRAMSHIFT is the controller. We rely on our legitimate interest in answering requests and on legal obligations (for example tax records). GRAMSHIFT is based in Japan, so this information is processed in Japan and by the providers named above.

Your rights

You can ask us to access, correct or delete personal information we hold about you, or object to its use, by emailing contact@gramshift.com. If you are in the EEA or the UK, you can also complain to your local data protection authority.

Retention and deletion

The plugin keeps no data of its own. Uninstalling it from the Stream Deck app removes the plugin and its log file. Support emails are kept only as long as needed to handle the request and meet legal obligations; you can ask us to delete them. Sales records are kept for up to 7 years for accounting and tax.

Changes

If the plugin ever starts to send or store data, this policy will be updated before that change is released, and the date above will change.

Contact

GRAMSHIFT · contact@gramshift.com · 1-10-8 Dogenzaka, Shibuya Dogenzaka Tokyu Bldg 2F-C, Shibuya-ku, Tokyo 150-0043, Japan