配對一定要從電腦那邊開始。不要在手機的藍牙設定裡搜尋電腦——手機現在扮演的是鍵盤，是被找的那一方。
電腦會把它當成一般的藍牙鍵盤與滑鼠，不需要在電腦端安裝任何程式。
多半是因為你的手機走的是低功耗藍牙（BLE）。部分手機的韌體沒有藍牙「HID Device」角色，App 會自動退到 BLE；這種情況下，電腦看到的是這支手機自己的藍牙名稱（也就是手機「設定 → 關於手機 → 裝置名稱」顯示的那個名字），而不是「Pocket KBM」——因為 BLE 廣播帶的是手機的藍牙名稱，App 無法單獨改寫它。
App 的等待畫面會直接告訴你該找哪個名字。此外，BLE 的搜尋比較慢、有效距離也比較短：請把手機放在電腦旁邊，並讓電腦的搜尋畫面多開一陣子，不要掃三秒就放棄。
重新打開 App 並按「準備連線」即可，通常十幾秒內電腦就會自己接回來，不需要到電腦上做任何事——這正是「手邊只剩手機」時最重要的一條路。
鍵盤與滑鼠在任何電腦上都可用。但音量、播放、亮度、瀏覽器、啟動應用程式這些「額外按鍵」，藍牙標準裡有，但一台電腦要不要理它，是那台電腦決定的。實測過的例子：
所以請把設定頁的「額外按鍵」當成開起來試試看的東西：需要哪組就打開哪組，在你自己的電腦上實測。App 內的說明也標示了哪些群組對一般電腦沒有意義。
進階功能是一次性購買，權益綁在你的 Google 帳號。換手機或重新安裝之後，到設定 →「還原購買」即可恢復。購買與還原時手機需要能連上 Google Play（本 App 自己不連網，由 Play 商店代為確認）。退款請依 Google Play 的退款政策向 Google 提出。
設定 →「匯出成檔案」會把你的自訂頁與偏好存成一個 JSON 檔，位置由你決定；新手機上用「從檔案還原」讀回來。自訂頁不進入 Google 雲端備份，只跟著裝置對裝置的轉移走，所以換機前請自己匯出一份。匯出檔是可讀的純文字，請不要把密碼或驗證碼放進按鍵動作裡。
來信 contact@hakus.cc。如果方便，請附上這幾項，可以省下很多來回：
Always start pairing from the computer. Do not search for the computer in your phone’s Bluetooth settings — the phone is playing the part of a keyboard, so it is the thing being found.
The computer treats it as an ordinary Bluetooth keyboard and mouse. Nothing needs to be installed there.
Usually this means your phone is using Bluetooth LE. Some phones’ firmware has no Bluetooth “HID Device” role, so the app falls back to LE — and over LE the computer sees the phone’s own Bluetooth name (the one under Settings → About phone → Device name) rather than “Pocket KBM”, because an LE advertisement carries the adapter’s name and an app cannot override it on its own.
The app’s waiting screen tells you which name to look for. Also, LE takes longer to be discovered and has shorter range: put the phone next to the computer and leave the computer’s scan running for a while rather than giving up after a few seconds.
Open the app again and tap “Prepare to connect”. The computer normally reconnects by itself within about ten seconds, with nothing to do on the computer — which is the path that matters when the phone is the only input device you have left.
Keyboard and mouse work on any computer. The extra keys — volume, playback, brightness, browser, launch-application — are in the Bluetooth standard, but whether a computer honours one is that computer’s decision. Measured examples:
So treat the “extra keys” screen as something to switch on and test: enable the group you need and try it on your own computer. The app itself flags which groups are meaningless to a PC.
Pro is a one-time purchase and the entitlement belongs to your Google account. After a new phone or a reinstall, use Settings → “Restore purchase”. Buying and restoring need the phone to reach Google Play at that moment (the app itself never goes online; the Play Store checks on its behalf). Refunds go to Google under Google Play’s refund policy.
Settings → “Export to file” writes your custom pages and preferences to a single JSON file, wherever you choose to put it; “Restore from file” reads it back on the new phone. Custom pages are excluded from Google cloud backup and travel only by device-to-device transfer, so export a copy before you switch. The export is readable plain text — do not put passwords or one-time codes into key actions.
Email contact@hakus.cc. Including these saves a lot of back and forth: