Sterling Posted August 6, 2015 Report Share Posted August 6, 2015 Thought long and hard whether I wanted to open this can of worms... figured I might save one of you guys from getting in trouble. Then again, this might get someone in trouble too. When you take a photo with any device, additional data is written to the image file. This data, called EXIF (Exchangeable Image File Format), stores information about the photo and the device that took it. This includes; Camera model Resolution Software Post-processing Exposure time Flash yes/no Camera pointing direction Much more.... And GPS COORDINATES - but only if your GPS is on (duh). So by sharing photos of your fish, you could be inadvertently sharing the lake on which it was caught. If the photo was taken right where the fish was caught (as they often are), you're also sharing the exact spot on the lake. I was able to use EXIF data to pull GPS coordinates right off photos here at OFC, so this is not theory, it is real. Some devices make use of A-GPS, meaning you don't need an actual GPS to get coordinates. These devices use cell towers to triangulate your location. I don't own such a device but they are quite popular (most Apple tablets for example). I don't know if it's possible to turn this off. What's more, EXIF also stores the exact time and date the picture was taken. I found photos of fish caught out of season right here on OFC (people just wait and post them when in season). The DO's and DONT'S: DO turn off your GPS when you don't need it. It sucks up lots of battery power anyway. DO use photobucket or imgur to upload photos. These services strip EXIF data on upload. DON'T fish out of season, jerk. Here's an example using a turtle picture I took a couple months ago: Anyway, hope this saves someone from inadvertently sharing their favorite spot(s). Link to comment Share on other sites More sharing options...
Gallie Posted August 6, 2015 Report Share Posted August 6, 2015 There are apps out there you can get that will do the same as photobucket and remove the gps coordinates, 9 times out of 10 i wouldnt care if people knew but there are exceptions. If i had to do years of searching and ground work to find a lake in the bush that finally produces what i want, i wouldnt want the whole of the internet to know too. However i might trade it for another spot from a member via pm. The app i have is called koredoko i believe. Link to comment Share on other sites More sharing options...
mepps Posted August 6, 2015 Report Share Posted August 6, 2015 Good advice, though I don't mind if people know my spots. I just don't want people to know i'm on a lake when I'm supposed to be at work! lol Link to comment Share on other sites More sharing options...
akaShag Posted August 6, 2015 Report Share Posted August 6, 2015 Very good advice, which a lot of us (ahem) older folks would not know. I did post a fishing picture on another website and a tech-savvy buddy of mine let me know that the picture had the GPS coordinates in it. The photo had been taken by a buddy with his cell phone, then sent to me via e-mail. THEN I uploaded it to a photo-hosting site that I use, and then posted it to the fishing website. So that GPS info travelled with that picture through several devices and processes!!! Fortunately my ancient camera does not have GPS, and I don't think my cell phone has GPS, but it can't take a picture anyway. Thanks for posting this!Doug Link to comment Share on other sites More sharing options...
irishfield Posted August 6, 2015 Report Share Posted August 6, 2015 Do you know where that button is on my flip phone? Link to comment Share on other sites More sharing options...
adolson Posted August 6, 2015 Report Share Posted August 6, 2015 On a mobile phone, OK, but don't go accusing people for OOS fish based on a datestamp if it's a regular camera. I pretty much never have my date and time set properly on my cameras because it's too much hassle for no real point. Some of them drift a lot, some of them reset whenever you pull the battery. I guess if the datestamp on an image looks reasonably legit, then sure, but still. Link to comment Share on other sites More sharing options...
glen Posted August 6, 2015 Report Share Posted August 6, 2015 A digital camera dosnt have gps. It's a smart phone concern only? Link to comment Share on other sites More sharing options...
Gerritt Posted August 6, 2015 Report Share Posted August 6, 2015 A digital camera dosnt have gps. It's a smart phone concern only? You would/could be incorrect there.... Many cameras are capable. Good topic for discussion. Link to comment Share on other sites More sharing options...
Gallie Posted August 6, 2015 Report Share Posted August 6, 2015 I dont need a datastamp to see people fishing oos... I can yell at them from my backyard april to june? Link to comment Share on other sites More sharing options...
irishfield Posted August 6, 2015 Report Share Posted August 6, 2015 Yes Glen, as Gerritt points out even point and shoot cameras have GPS capability. My Panasonic Lumex has it.. turned off. Link to comment Share on other sites More sharing options...
misfish Posted August 6, 2015 Report Share Posted August 6, 2015 Yes Glen, as Gerritt points out even point and shoot cameras have GPS capability. My Panasonic Lumex has it.. turned off. This would explain the large gathering this spring out laker fishing. They were all over Terry and I. Thats it, going back to this,,,,,,,,,,,,,, Hell I think theres one still around here. I even have a scanner so, NO GPS FOR YOU LOL Link to comment Share on other sites More sharing options...
BillM Posted August 6, 2015 Report Share Posted August 6, 2015 Upload to PB, it strips EXIF automatically.. Still not a smart idea to embed your GPS info into your fishing pics if you don't have to, lol. Link to comment Share on other sites More sharing options...
206 Posted August 6, 2015 Report Share Posted August 6, 2015 Years ago this was an issue I don't believe there are any sites that share the EXIF anymore? If you find any let me know Link to comment Share on other sites More sharing options...
BillM Posted August 6, 2015 Report Share Posted August 6, 2015 Years ago this was an issue I don't believe there are any sites that share the EXIF anymore? If you find any let me know There are a tonne of sites out there that don't strip EXIF, and what about the guys uploading their pics directly to their own site? Still lots and lots of ways for people to screw up, lol. Link to comment Share on other sites More sharing options...
adolson Posted August 7, 2015 Report Share Posted August 7, 2015 A digital camera dosnt have gps. It's a smart phone concern only? My Nikon Coolpix does, and there are some DSLRs that do as well (not my T3). I don't use it because I think it's stupid, but I can imagine how it might be used by some people. Link to comment Share on other sites More sharing options...
cram Posted August 7, 2015 Report Share Posted August 7, 2015 So what you're saying is......we should all be heading over to Fisherpete's LOTW report and stealing his spots? Link to comment Share on other sites More sharing options...
Fishwilly Posted August 7, 2015 Report Share Posted August 7, 2015 My Olympus Tough TG3 has GPS built in Link to comment Share on other sites More sharing options...
Smokercrafty Posted August 7, 2015 Report Share Posted August 7, 2015 Some good info and heads up on how vulnerable we are these days, with all the gadgetry we have, and most don't even know it. Great post. Link to comment Share on other sites More sharing options...
smitty55 Posted August 7, 2015 Report Share Posted August 7, 2015 Good heads up there Sterling. A lot of folks don't realize this. Can you imagine having your back lake honey hole raped? There are several exif stripper programs out there. Here's one. http://www.softpedia.com/get/System/File-Management/EXiFStripper.shtml Cheers Link to comment Share on other sites More sharing options...
manitoubass2 Posted August 7, 2015 Report Share Posted August 7, 2015 Might as well mention all the other crap you(we) agree to when we download apps. Unreal what they ask for, access to your camera and pics, phone numbers, video to name a few Link to comment Share on other sites More sharing options...
mike rousseau Posted August 7, 2015 Report Share Posted August 7, 2015 Not only fishing spots to protect... But your home and family as well... Watched a documentary where in a few weeks of online picture stalking a hacker knew where the family lived... The kids favourite park... Their best friends home... Their favourite restaurants... And more... Scary stuff Link to comment Share on other sites More sharing options...
MJIG Posted August 7, 2015 Report Share Posted August 7, 2015 Why strip the GPS coordinates from your fish photos when you could have so much more fun replacing them with the coordinates of the settling pond at the sewage treatment plant? Link to comment Share on other sites More sharing options...
Sterling Posted August 7, 2015 Author Report Share Posted August 7, 2015 (edited) On a mobile phone, OK, but don't go accusing people for OOS fish based on a datestamp if it's a regular camera. I pretty much never have my date and time set properly on my cameras because it's too much hassle for no real point. Some of them drift a lot, some of them reset whenever you pull the battery. I guess if the datestamp on an image looks reasonably legit, then sure, but still. When it's a smartphone you can be fairly certain the date hasn't been manipulated. Like I said, can of worms. Not always illegal either, there's a reason I'm not mentioning any names . Years ago this was an issue I don't believe there are any sites that share the EXIF anymore? If you find any let me know There are a tonne of sites out there that don't strip EXIF, and what about the guys uploading their pics directly to their own site? Still lots and lots of ways for people to screw up, lol. Still lots of sites not stripping exif. It's very common. One of them is OFC. Try it; Here's the direct URL. Why strip the GPS coordinates from your fish photos when you could have so much more fun replacing them with the coordinates of the settling pond at the sewage treatment plant? Now you're talking! Edited August 7, 2015 by Sterling Link to comment Share on other sites More sharing options...
Old Ironmaker Posted August 7, 2015 Report Share Posted August 7, 2015 My mobile phone has holes in the dial that you put your fingers in the numbers. It is mobile because it has a long cord on it and I can take it into the next room. You think I'm kidding? Link to comment Share on other sites More sharing options...
adolson Posted August 7, 2015 Report Share Posted August 7, 2015 When it's a smartphone you can be fairly certain the date hasn't been manipulated. Like I said, can of worms. Not always illegal either, there's a reason I'm not mentioning any names . True. There are tons of year-round brookie lakes around here, and I do tend to hit them up after the others are shut down. I do like the replacing of coordinates idea... Only problem is I'd want to see if anyone showed up. Link to comment Share on other sites More sharing options...
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