My HTML5 app uses Google Maps and tracks the user with navigator.geolocation.watchPosition, showing their location with a marker on the map.
I also have a toggle button. If the user clicks Off, I would like to stop tracking them with watchPosition.
This is my code so far:
$("#loc-label").click(function(){
if ($('#loc').is(':checked')) {
navigator.geolocation.clearWatch(watchId);
position_marker = null;
} else {
watchId = navigator.geolocation.watchPosition(geolocationWorked, geolocationFailed, {enableHighAccuracy:true, maximumAge:30000, timeout:27000});
}
});
However, with this code, whenever the user toggles location on, they get re-prompted by the browser (in Firefox at least) asking them if they are willing to share their location.
Is there any way around this? Ideally I'd only like to prompt them once.
Obviously I could just hide the marker (but really continue to track their location) when the user toggles off. However, this isn't ideal, as I'm using high accuracy (i.e. GPS if available) and I'd prefer to give the user the ability genuinely to turn geolocation off.
Thanks!
I guess the behavior is device-specific. When testing the demo at http://www.thedotproduct.org/experiments/geo/ on my HTC Desire I get prompted only once unless I reload the page.
Of course the user won't be prompted again anyway if he chooses to permanently allow the page to access the users location (which I did not for the demo above).
Safari and Chrome (on mac at least) have settings to choose whether to ask. Haven't found that on Firefox yet; seems to prompt all the time.
Related
hi im using laravel 8 and my software is pos ..
everything working so good but i have big problem ..
thats sometimes the cashier can refresh the page when the customer is gone without save the invoice
..
so what i did is this ..
document.addEventListener('keydown', (e) => {
e = e || window.event;
if(e.keyCode == 116)
{
var is_admin = $("#is_admin").val();
if(is_admin != 1)
{
e.preventDefault();
// this code here will not allow f5 to work
}
}
});
but the cashiers goes to the address bar and hit enter and like that he refresh the page
also sometimes they hit the refresh button beside url bar
so i start chrome in kisok mode in full screen
but the problem thats he can move the mouse to the top of the browser and the url bar will show again and he can do refresh page ..
so the solution for my problem is there any way to set password in chrome when refresh the page or close the chrome or is there any way to start chrome without close bar and url bar in kisok mode
thanks ..
Based on my research I didn't find anything related to setting a password in chrome for closing, instead, I have other solutions that may help you by considering this closing/refreshing issue happens accidentally.
#1st Solution - Closure Extension
https://chrome.google.com/webstore/detail/closure/jjagagcgljmlnihcilbpbfcglnopepjb
a very simple extension that works by locking the current browser tab. Click the toolbar icon or right-click on a page and select “Confirm Closure”. The favicon for the website in the current tab will turn into a padlock.
if the cashier clicked on the refresh button or the closing button a confirmation popup will show up.
#2nd Solution - Disable Close Button
checkout these 5 software that claims to prevent accidental closing of software by disabling the close button
https://www.raymond.cc/blog/prevent-program-closing-disabling-close-button/
#3rd Solution - Saving Draft.
The last solution I have is a workaround you can make by using
window.addEventListener('beforeunload', function (e) {
// saving current invoice in localstorage to be retrieved later
});
// check this answer
// https://stackoverflow.com/questions/13443503/run-javascript-code-on-window-close-or-page-refresh
beforeunload event, so you can save a draft of the current invoice in locale storage before closing the window, but you are should be very aware of how to manage these drafts, when to retrieve them, and when to clean them.
Also, you can use service workers if you choose this kind of solution.
Again, this all about if the cashier accidentally makes this behavior, which I think he must be aware of what he is doing, so you are making your validations as you can to prevent such behavior and make your system as robust as possible, I encourage you to think of this problem in a technical way then you should take the 3rd solution, and for the client just offer him the other 2 solutions which I see they will work well, otherwise, if the client wants to make something wrong in purpose then it will be his responsibility.
Sorry for cumbersome title, couldn't come up with more descriptive one.
The problem is when opened tab is left without user activity, for example user switched to another screen, Chrome stops rendering changes on that tab. Looks like any background activity is put on hold which is great from perspective of saving power and resources. But if user still needs to see all live updates what is the way to prevent tab to go to 'idle' state despite of having no user activity?
I was looking into chrome.idle API but it doesn't say how to prevent, only how to check.
When we ask the user to allow us to use their Camera and Microphone the browser presents some sort of interface asking the user to accept or reject this action.
In Google Chrome this interface looks like this:
Our users seem to be missing the appearance of these Deny and Allow buttons.
Is there any cross browser utility that serves as "visual encouragement" for the user to click allow?
For instance, in the case of Google Chrome, something like a big yellow arrow would appear in the upper right of the page window and point at "Allow".
Agree that the default presentation in the major browsers leaves a lot to be desired. That pop-down menu bar is (typically) visually isolated from whatever the user clicked on to trigger the permission request. That is, their locus of attention is on an element that's disconnected from what they need to do next. This problem is exacerbated (1) by banner blindness (which means that people are used to ignoring animations in their peripheral vision, assuming that it's an ad) and (2) on larger screens.
So those are the issues causing the problem.
Here's a quick video walkthrough of one way to solve the problem by the site and by the browser itself, using Google Maps' "use my location" feature in the web browser:
http://cl.ly/2h2f382A143F/so-browserpermissions.m4v
So i've been banging my head against the wall trying to figure this out, and it's about time I ask for help. I have a flash audio recorder that is displaying a popup to the user asking them to allow microphone access using:
AS3 --
Security.showSettings(SecurityPanel.PRIVACY);
Now, on chrome it works perfect! Everything shows up correctly and looks like this:
http://postimage.org/image/6e6ldfmpj/
Great. Now the issue is, on Firefox (and I believe IE9) it looks like:
http://postimage.org/image/mqp1kmcjj/
Notice how there are only 3 tabs in the second one (Firefox). Well, the second tab over is Privacy and allows you to "allow" or "deny" our website from accessing your mic. So it's a bit of an issue that that tab is not even visible... Any thoughts on that? I can't seem to find anywhere where anyone has had that same flash dialog box pop up with only 3 tabs.
Thanks in advance!
You can use [Allow][Deny] dialog:
It appears whenever you access microphone/camera by attaching them to NetStream.
Related question on stackoverflow:
allow deny remember flash security panel
As Sunil D. mentioned above, Firefox will not show some tabs in private/incognito mode. The problem is user can turn it on not only by opening new private window, but also by changing some regular Firefox preferences. Go to Firefox options, select "Privacy" tab and search for "History" group. There you will see a dropdown with "Firefox will:" label. There you can select "Never remember history" item and browser will show you a small tip:
Firefox will use the same settings as private browsing, and will not remember any history as you browse the Web.
Then your browser will be restarted. Further research revealed that Firefox really turns private mode on after such manipulations. Sunil D. and Jordan Reiter were both right - the problem can happen with users in private mode and problem can be solved by reinstalling Firefox with all it's configurations (including that history setting). Of course, it's much easier to ask users to change that setting. Also private mode detection with JavaScript can help to inform user about this expected problem.
What vulnerabilities do i face, when coding a web app utilising localStorage, of a user inadvertently or deliberately delete localStorage data?
I'm happy to put a button saying "Delete my data", this is under my control, but are there ways beyond my control that localStorage data may be deleted? Or not used (ie. Incognito mode/private browsing mode)?
Thanks
Anyone can call localStorage.clear() from the console or location bar at any time. It's possible for a bookmarklet to be used to do the same thing.
Treat localStorage with the same volatility you'd treat a cookie. Assume that it can disappear at any time. It's best used for user-settings and temporary data. If a user clears it, be prepared to use default fall-backs or start the process over.
localStorage is editable by the user , it's similar to the cookies .
User can delete / edit it if he wants , so you should make ur tests on server sides ...
here's an example of how angry birds got hacked ...
http://thenextweb.com/apps/2011/05/11/angry-birds-for-chrome-already-hacked-unlocking-all-levels/
var i = 0;
while (i<=69) {
localStorage.setItem('level_star_'+i,'3');
i++;
}
window.location.reload();
Here's what we found a user can do on iPhone IOS4 and iPad IOS4.
Kill Safari
Double tap your "action button", press and hold the safari button that shows up on the bottom. When the circle with an x in the middle shows up, click the x.
Clear the Safari cache
Settings | Safari | Clear cache
Start Safari back up
Bad news - all sites local storage is cleared, not just yours!