# 2.9 讨论与练习

1. 如何保存私钥？
2. “中神钱包”是一种数字资产硬件钱包，代码没有开源，有“美国FCC认证”标识，请评价其安全性。
3. 请评价浏览器钱包Metamask的优缺点。
4. 请在手机上安装一种多币种钱包，并编写一个简单的安装与备份的使用指南。钱包试用推荐：

   手机钱包pillar. 、Trust Wallet、imToken国际版、WallETH钱包（只有安卓版）：<https://walleth.org/>

   纸钱包Ethaddress

   奇葩钱包（官方自称为智能钱包Smart Wallet）Argent（<https://www.argent.xyz/）>

   多币种钱包Coinomi或Jaxx Liberty
5. 请查阅资料，详细解析以太坊的多重签名的应用，并与比特币的多重签名进行优缺点的比较。
6. 下载、安装并试用Status钱包：<https://status.im>

　　Status是一款融合了P2P消息、去中心化加密货币钱包以及Web3浏览器于一体的多功能通讯工具。

　　必须遵照其要求备份私钥助记词和仨交易签名单词！出现任何漏洞都可能会让你的资产受损。

[![Gitter](https://badges.gitter.im/naturaldao/%E5%8C%BA%E5%9D%97%E9%93%BE%E6%A6%82%E8%AE%BA.svg)](https://gitter.im/naturaldao/区块链概论?utm_source=badge\&utm_medium=badge\&utm_campaign=pr-badge)


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