I'm using Zkteco k14 and the app that comes with it. The app comes with a feature that auto downloads Zkteco device logs to the DB. The bad thing is, it's only has 1 min. interval and it's kinda buggy.
My question is. Is there a way or a script to make downloading logs from device to my DB without manually downloading it using the app? Thanks!
There is a way using the SDK provided by Zkteco, I been using it with my application. Check this link:
https://www.codeproject.com/Articles/1104538/Csharp-ZKTeco-Biometric-Device-Getting-Started
Good luck!
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I'm testing my Win32 app converted to UWP, so I'm new to the whole Windows 10 Store concept.
So far I was able to get my app certified & published in the store via a private link. Now I would like to download and test it, but there's an issue.
The first time someone sees the app it has the following options:
but once you get it, all you see is this:
and even if you log in under a different Microsoft account (on the same computer), or previously uninstall the app, you get this:
and "free trial" simply installs it w/o a trial in that case.
So my question is, how do I make Windows Store "forget" that I have this app?
If you have bought the app you can't undo that, but you can always create a new user who has never bought for the testing purpose.
EDIT: Windows Store is for real transactions and not for testing. If you want to test, you should have a custom build that uses CurrentAppSimulator instead of CurrentApp
I'm working on modern Windows 8 app and wanted to figure out if Windows.Storage.ApplicationData.current.localSettings (msdn doc is here) get cleaned up when the app gets updated by the store.
Those settings are preserved across app updates, as are the roamingSettings and the contents of localFolder, roamingFolder, and tempFolder. In other words, performing an app update does not affect any of the appdata state, which makes perfect sense when you consider that many updates are minor bug fixes and should not in the least way require resetting or migrating existing state.
Do note that uninstalling an app and then reinstalling it will clean out localSettings, localFolder, and tempFolder. roamingSettings and roamingFolder will be restored provided that the user has had the app installed on another device within some reasonable period of time (unspecified, but something like 30 days).
It's also good to know that app state has its own versioning scheme through ApplicationData.setVersionAsync, and that an app update can choose, if it wants to migrate appdata from one version to another. Examples can be found in the Application Data sample.
No, your local settings will persist between app updates.
I've built a web server using Chrome Packaged Apps. The problem I see repeatedly is that chrome.socket.accept() and chrome.socket.write() don't invoke their callback functions. It usually works more or less reliably if request rate is less than 1 request per seconds. If I go above that, then I start seeing errors or missing callbacks.
I did similar tests with sample "webserver" app build by Google (https://github.com/GoogleChrome/chrome-app-samples/tree/master/webserver). It has the same problem. It usually takes less than 100 requests before web server stops responding. The easiest way to reproduce the problem is to use Chrome browser as a client and hold F5 key for few seconds.
It would be desirable to have a sample app that demonstrates how to build reliable web server using chrome.socket. So far I tried several different workarounds for monitoring the situation from the app itself and restarting socket when socket stops working, but it's not easy because there is no reliable way to check the status of the connection or status of the last operation when callback is not fired. I tried to use getInfo() method, but it always returns "connected=true" regardless of the situation.
I saw this on Windows 7 and Chrome OS (Chromebook).
Just an update on this. According to this the issue is now fixed.
There are still other problems with the sample web server application. I noticed that I could make the sample app lock up by holding down Ctrl-R in the browser. I wrote a more robust one that you can use here: https://github.com/kzahel/web-server-chrome
With HTML5's offline capabilities is it possible to create an app that will persist after the connection is lost and the browser is closed? Specifically, here's what I'd like to do:
Connect to the app while online. Download the entire app including a small database it runs on.
Close the browser and disconnect.
Open the browser again while offline and load the app from the local cache.
Thanks to Mark Pilgrim's excellent book I believe I have an idea of how to accomplish the first step, I'm mainly wondering if the last step is possible. If this is possible, I'm guessing it requires some configuration of the browser. Any settings I should be aware of that aren't obvious?
Thanks very much for any help offered.
The last step should be possible - it just depends on what extent you want to implement it to. To my knowledge it shouldn't require any browser settings. You just have to be aware of the limitations of local storage, which I believe is 5mb max at the moment (for most browsers). Obviously you'd have to perform the checks for such permissions as outlined int the Dive Into Html5 guide you linked.
The quickest and dirtiest way is to simply issue a GET request to your online app. If it responds correctly, then use the online version. If not, use the local cache. Just disguise the timeout/failed response as a 'loading' screen.
I'm developing a Chrome App (as a packaged app/extension) which purpose is to act as the base platform for several fullscreen apps to be build on top of. Chrome will be running on Ubuntu Linux.
And no trouble so far. But then I was told, that an intended app it is to be the platform for requires the source code to be updated with very short notice, as it probably is to be deployed for large scale use before the system has been tested through (even though it's a bad idea to deploy software that's not completely stable, but we're on a tight schedule). The problem is, that the "a few hours" interval for the autoupdating mechanism just isn't good enough.
So I somehow need to have the updating interval changed. I know this can be done with the --extensions-update-frequency command line switch, but as apps cannot access the command line (for obvious security reasons), and I'd prefer that the intended background page was to handle all the "administration", I don't think that switch is possible to use.
Is it somehow possible to update at a higher frequency? Or at times when it's ordered to?
There is now a method chrome.runtime.requestUpdateCheck():
Requests an update check for this app/extension.
It will return a status, which can be either "no_update", "update_available" or "throttled".
Unfortunately, the docs do not specify the limits for frequency that will trigger "throttled".
Your best option will be to have the extension manually check with your servers for an updated version. If there is an updated version show the user a desktop notification to manually update.
Potentially you could write a NPAPI plugin to modify the update frequency.
This may cause issues with CSP but you can try to live load JavaScript from your server that executes in the extension. In this case to "update" your extension you would simply update the JS hosted on your servers and the extension would automatically start using it on next load.