问HN：有没有类似于Palm Pilot的现代设备？
随着所有移动生态系统的关闭，我正在考虑换成一部功能手机。它将仅用于通话和短信。对于我所有的个人计算和爱好项目，我希望有一个额外的设备，能够运行开源软件，并且不妨碍我构建和运行自定义应用程序。拥有一款类似经典Palm Pilot的“掌中宝PDA”设备将是非常棒的。也许还可以配备手写笔，4到5英寸的触摸屏，方便携带。有没有类似的设备可供选择？平板电脑太大，而且也在使用相同的封闭移动生态系统。
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With all mobile ecosystems closing down, I am considering switching to dumb phone. It will be used for calls and SMS only. For all my personal computing and hobby projects I would like to have some additional device that runs open source software, and does not prevent me from building and running custom applications. It would be amazing to have some device similar to classig Palm Pilot, "handheld PDA". Maybe even with stylus, 4"-5" touchscreen that easily fits anywhere. Are there any similar devices available? Tablets are way too large and are using same closed mobile ecosystems.