几张泄漏出来的截图显示：Healthbook以卡片形式记录一系列健康和健身数据，包括含水率、血压、血糖、心率、呼吸和血氧饱和度等。

    我们很难想像一只小小的手表能测量这么多数据，同时还能符合苹果首席设计师乔纳森•艾维苛刻的审美观。但如果埃文斯猜测的没错，它没必要二者兼备。

    埃文斯写道：“假设苹果确实在开发类似Passbook的卡片式健康应用，那么，如果你购买、打开一部‘Healthbook’认证的血压计，将会发生什么事情？”

    “有些人认为，苹果会像iOS7现在的做法一样，使用低功耗蓝牙技术自动探测周围的健康设备并提示（如血压计）。然后，用户也许还能安装Healthbook卡片来管理这部设备……甚至还能在任何装有传感器的设备上安装Healthbook应用。如此一来，苹果就打造了一个即插即用的个人健康设备管理平台。无需多种应用程序、无需本地代码、不用应用程序商店、也不用自己做硬件配置。”

    “这也许解释了为什么苹果最近招聘的‘可穿戴设备专家’听起来不像是研发手表的人，倒像是在研发测量多种技术性指标的医疗设备。因为苹果打算增强医疗保健设备的功能，而不是把它们一股脑地装入自家的手表或手机里。换言之，简单的传感器会装入手机（例如iPhone 5S自带的计步器），而一些复杂精密的设备会由一个被授权的苹果平台去管理，而不是整合进任何苹果产品设备中。”

    埃文斯称，苹果和谷歌的问题在于产品代码应如何保存。两家公司都宣称可穿戴设备的“智能部分”应该放在智能手机或平板身上，后者每隔几年就能轻轻松松地更新换代。

    埃文斯总结说：“（智能手表）其它的部分应该就是一个普通传感器，或一块屏幕，或者两者兼有。”（财富中文网）

    译者：项航

    Leaked Healthbook screenshots show a display of "cards" offering a range of health-related data: Hydration, blood pressure, blood sugar, heart rate, respitory rate, oxygen saturation, etc.

    It's hard to imagine a device that can measure all those things fitting into something stylish enough to meet Jony Ives' exacting taste in watches. But if Evans is right, it wouldn't have to.

    "Suppose for the sake of argument," he writes, "that Apple does indeed plan a health app that's card-based, somewhat like Passbook. What would happen when you buy and turn on a blood pressure monitor that is certified for 'Healthbook'?

    "Well, one would expect that Apple would use the Bluetooth LE auto discovery that's already in iOS7 to detect it automatically and tell you. And then, suppose it offers to install the Healthbook card to manage it... Suppose it does the same for any sensor you might buy? Then Apple has created a zero-setup platform for personal health devices. No apps, no native code, no app store, no configuration at all.

    "This would be one answer to why Apple's recent hires of 'wearables experts' sound a bit like a team for a hospital device rather than a watch, measuring various quite technical things -- because Apple plans to enable such devices, not try to pack every single one into its own device. That is, the straightforward sensors should live in the phone (like the pedometer that's already in the iPhone 5S) and the complex and demanding ones should be enabled by an Apple platform, not become part of an Apple device."

    The issue for Apple and Google, Evans writes, is where the code lives. Both companies seem to be saying that the "smart" part of wearable devices should be concentrated in the smartphone or tablet -- something that's easy to update and gets replaced every couple of years.

    "Everything else," Evans concludes, "should be a dumb sensor or dumb glass or both."