SBHelper 1.0
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Free Version
Publisher Description
This is a tool for you to get an alarm when an edge of a platform is close to you on a subway station. This does not replace your white cane or a guide dog. It is an attempt to add another layer of alarm with your iPhone's camera to sense a change of brightness because a platform is usually brighter than its railroad at most, if not all, subway stations. When the iPhone is held in the portrait position, with its back camera facing slightly down, this camera compares the top half brightness and bottom half brightness of the view every two seconds. If the bottom half is twice as much brighter or more than the top half, this tool sounds an alarm with vibration. To compensate a bright wall, the camera also divide the view into three regions: top one third, middle one third, and bottom one third. If the bottom one third is twice as brighter or more than the middle one third, it also sounds a different alarm with vibration. And if the middle one third and bottom one third are both too dark to compare, it sounds yet another alarm with vibration. To also get magnetic North, when you hold your iPhone on a face up or down position, it tries to find the magnetic North direction and sounds an alarm when found. This alarm continues as long as your iPhone is heading to North within plus or minus 30 degrees. If it cannot find any magnetic direction, you will get a different alarm regardless of the iPhone's direction. Because the brightness comparison is turned off in this mode, do not move around when you hold your iPhone face up or down. The magnetic North can get a large error when there is a magnetic device around you. This app does not record anything. It uses the back camera as merely a brightness sensor. This app claims no responsibility for user's safety and suitability of alarms that it generates for your use. You, as a user, is fully responsible to determine whether or not this app works for your situation. The author of this app shall not be held liable for the decision you made. Because of the brightness assumption, this app does not work for a bright railroad or on a train station above the ground with lots of ambient light. Be sure to try this app with someone you trust first on your subway stations to learn its behavior and limitations. Because each camera has a different light sensitivity, you must test this app with your own iPhone to determine its suitability. For the first time only, this app asks for your permissions to use the camera and location service (compass) of your iPhone. You must grant the two permissions for this app to work. You don't get any vibration on iPad. GPS is not used.
Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.
About SBHelper
SBHelper is a free app for iOS published in the Recreation list of apps, part of Home & Hobby.
The company that develops SBHelper is Masayoshi Habu. The latest version released by its developer is 1.0.
To install SBHelper on your iOS device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2016-10-14 and was downloaded 3 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the SBHelper as malware if the download link is broken.
How to install SBHelper on your iOS device:
- Click on the Continue To App button on our website. This will redirect you to the App Store.
- Once the SBHelper is shown in the iTunes listing of your iOS device, you can start its download and installation. Tap on the GET button to the right of the app to start downloading it.
- If you are not logged-in the iOS appstore app, you'll be prompted for your your Apple ID and/or password.
- After SBHelper is downloaded, you'll see an INSTALL button to the right. Tap on it to start the actual installation of the iOS app.
- Once installation is finished you can tap on the OPEN button to start it. Its icon will also be added to your device home screen.
