1, what is needed is the serial code of the electronic coupon. It's convenient and there are no restrictions on shopping. The amount on the exchange voucher will offset some cash. The salesperson enters the serial number and checks it. If there is no mistake, it can be used as cash to buy things.

2. At present, every Wedome store in Beijing has China Mobile's identification code machine, which can be exchanged when it is swept away. You can also read the number of the electronic code to the cashier or exchange it. Just go to Wedome's store, and pay attention to keeping the two-dimensional barcode on the information, that is, the pattern like a stamp, for code scanning.

Extended data:

1, the e-voucher is valid for 30 days. After being converted into a gift card, the validity period of the gift card shall prevail;

2. Electronic vouchers can be exchanged and used by different merchants in different times during the validity period;

3. E-vouchers can be used by merchants such as Holiland, Wumart, JD.COM, Tmall, Sinopec and Didi;

4. If you encounter problems in password retrieval and use of e-vouchers, you can call: 10 188 for telephone consultation, and call normally to collect the call charges.