site_archiver@lists.apple.com Delivered-To: bluetooth-dev@lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fyrastudio-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=RGUkNMmvLWLYdmrQpFf7hUasB+CmIpKTYb/wHOgvsHk=; b=y+XFEBqC8JILFSO1z176jmBc4xmz4U/bhyOwrTOy4+xVhsi49maVlAqApH1UHyaagH iQ7xiO6g30IXW33LZVKbS/mJWhO93DIDSXPGWsfrfgk3zsG3gMRZTKfLxYQvxEaFvPBU CPY7jDHYY6jDMWu/HhXNJWggIC7vzGXd0RjVtRcXf0cGyK0tl0zoujAAF+hFHSet/o4S JPHUffEvL9MF4DACBtDnBBfDHaXzPeHjLrS7G70skX1XrI2kiUnn+lPl07YBPxOa1FQj IDQ6acoDElewiVVLSxLVwynbGwcM8hc9XyeT7Yz+xmwIus7Zk7D9id4CWxN16bmVOHOO caGg== Apple did announce that they are sharing their APIs with specific developers. Maybe UK NHS is one of them? *_____**_* Jan Lübeck Chief Technology Officer fyrastudio.com On Thu, May 7, 2020 at 3:48 PM Darren Jones via Bluetooth-dev < bluetooth-dev@lists.apple.com> wrote:

Unless you have your head buried in the sand, I’m sure everyone has noticed the sagas going on with countries creating their own COVID-19 contact tracing apps.

I have personally tried many times over the years to create an app that can broadcast and scan in the background to trigger a ‘contact trace’ and always failed. Yet the UK NHS are claiming they have an app that does just that.

I’d love to hear from anyone that’s had experience with background BT. Is it possible? Can a background CBPeripheral be detected by a background CBCentral?

If not, is there a definitive time period when discovery becomes impossible?

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