One drawback of qr codes is that some people are not familiar with QR codes. There are still a lot of people in society who do not know what the QR code stands for, although QR codes can be seen almost everywhere in our lives. Many companies trying to use QR codes to promote their own products as well as looking for potential customers, but if the customer does not know how to find the information through the QR code, they seem to may not purchase a product or service. Another major drawback of QR codes is that they rely on mobile devices or smartphones. The whole concept of a QR code and its benefits are based on its ability to be scanned by mobile devices. If consumers, like older people, do not have mobile devices or smartphones, qr codes are not good for them.[31]

Sending text messages to phone numbers of owners who have not opted-in to your SMS campaign is an illegal practice. It is a violation of federal law under the TCPA, and it can result in costly lawsuits. Consumers can sue you for sending them unsolicited messages, and they can claim between $500 and $1,500 for every unwanted text message that you have send to them.
People have become very comfortable texting and the format lends itself to short, informal communications with abbreviations and emojis. Meanwhile, many people resist picking up the phone to talk to a stranger. Texting therefore becomes the perfect first-contact, allowing your sales representatives to begin establishing a relationship before transferring to a phone call when it’s needed.
Although investment in mobile marketing strategies like advergaming is slightly more expensive than what is intended for a mobile app, a good strategy can make the brand derive a substantial revenue. Games that use advergaming make the users remember better the brand involved. This memorization increases virality of the content so that the users tend to recommend them to their friends and acquaintances, and share them via social networks.[28]
This is why they designed their own customized queue logic and set up intelligent call routing flows. With the new routing logic Apartment List was able to classify the caller need and assign them to the right agent. Minimizing wait times and maximizing efficiency, the online directory has drastically increased call volume and improved customer satisfaction.
When you purchase a list of numbers, you are really going after the attached consumer data. You cannot use the actual numbers to grow your list, but when an owner of a purchased number does opt-in to your SMS campaign, you can connect the data to the subscriber. This will allow you to target messages with content that will result in a higher success rate.
To avoid sharing numbers with other senders, and for brand recognition and number consistency, leasing a dedicated virtual number, which are also known as a long code or long number (international number format, e.g. +44 7624 805000 or US number format,[9] e.g. 757 772 8555), is a viable option. Unlike a shared number, it can receive SMS replies. Senders can choose from a list of available dedicated virtual numbers from a bulk SMS provider. Prices for dedicated virtual numbers can vary. Some numbers, often called Gold numbers, are more easy to recognise, and therefore more expensive to lease. Senders may also get creative and choose a vanity number. These numbers spell out a word using the keypad, like +1-(123)-ANUMBER.
Once you've collected your mobile numbers, verified that you have followed all of your legal responsibilities you can start your SMS marketing campaign. I'd suggest using a 3rd party service provider to ensure that you are able to track the return on investment for your campaign, embed an unsubscribe message, and easily manage your SMS marketing database including unsubscribes. 
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