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HID keyboard. Connection termination for power budgeting

Hello, I'm trying to optimize power on HID Keyboard app. This post was helpfull but yet some questions remains.
If I use several services, and want central to be abble to connect the peripheral in usage one of them is required. In real as soon as peripheral start advertising, the central's HID driver connects device in a very fast intervals (HID over GATT Profile Specification "5.2.6 Fast Connection Interval ...7.5 ms - 50 ms") that is not power efficient.

I'd like to know whether is possible to advertise but not be connected by HID driver on central until keyboard event appear?

0 Valer_I over 8 years ago in reply to Sigurd

Thanks, but it is not appllicable in my use case. I do not know what exect central device in range to put just it in whitelist. But may be my use case is impossible to implement because BLE do not have "blacklist" but only whitelist.
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0 Sigurd over 8 years ago in reply to Sigurd

If the central is already bonded, you know the id and can put the id in the whitelist. If he tries to connect when you advertise, you know that he’s in range.
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0 Valer_I over 8 years ago in reply to Sigurd

Thank you! Your answer pushed me to a good idea.
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