<p>This Android app vibrates the current time when the display is locked and you double-click the power button of your device.</p><p>How it works</p><p>Double-click the power button. This might take some practice to work reliably. Press slowly and deliberately. If you double-click too fast the system only recognizes a single click and turns the screen on instead.</p><p>The time vibration is structured as follows:</p><p>A short vibration stands for the digit 1 and a long one for the digit 5. The 2 is represented by two consecutive short vibrations, the 6 by a long and a short one and so on. The 0 constitutes an exception with two long vibrations.</p><p>Examples:</p><ul><li>01:18 = . . -...</li><li>02:51 = .. - .</li><li>10:11 = . -- . .</li><li>19:06 = . -.... -.</li></ul><p>Explanation:</p><p>The time is processed digit by digit:</p><ul><li>. = short vibration</li><li>- = long vibration</li></ul><p>Leading zeros in the hour and minute fields are omitted.</p><p>Gaps:</p><p>To simplify the recognition of the vibration pattern, there exist three kind of gaps with different durations:</p><ul><li>[]: A short gap between vibrations in the same digit</li><li>[  ]: A medium gap for the separation of two digits within the hour and minute field</li><li>[    ]: A long gap to split hours and minutes</li></ul><p>Additional features</p><ul><li>Keep informed about the current time. The app can vibrate the current time automatically every X minutes or every hour.</li><li>Play the <a href="https://en.wikipedia.org/wiki/Greenwich_Time_Signal" target="_blank" rel="noindex nofollow noopener">Greenwich Time Signal</a> at the start of each hour, similar to a radio station.</li><li><a href="https://play.google.com/store/apps/details?id=net.dinglisch.android.taskerm" target="_blank" rel="noindex nofollow noopener">Tasker</a> integration: If your smartphone has an additional hardware button that is supported by Tasker, you can configure it to vibrate the time. You can find the corresponding