Second of all, it's obvious from context in Revelation that "bearing the mark of the Beast" means to worship the Antichrist as God: those who worship God have His mark upon them, those who side with Evil bear its mark. This harks back to the Roman emperor Nero, who lived in St John's day. Nero had himself declared the Supreme Being and required all inhabitants of Rome to demonstrate their worship of him by burning a pinch of incense before his idol. Rome's Christians, of couse, refused to do this, and were martyred as a result. Likewise, St John is pointing out that in the final days the forces of Evil will concoct some sort of deified man (or men, or system of men) that will proclaim himself/itself to be the Supreme Being, and will require all to worship him/it as a mark of loyalty. This is the final Antichrist. Then as now, the worship of any being other than God will remain one thing a Christian can never do. Martyrdom will follow.
(NB: In Greek numerology, Emperor Nero's name [NRONKSR] sums up to 666. He was one of the original antichrists.)
But a driver's license? Please. God is not going to refuse you access to Heaven for having valid Texas ID. I wouldn't let anyone chip me or mine, but that's because such a method of identification reduces a human being to the status of property, not because I think it's the dreaded Mark 666.
Bottom line: Jesus saved us all by His Passion and Ressurrection. Therefore, the only thing that can keep a person from going to Heaven through Him is that person's voluntary and conscious rejection of Jesus Christ — not just in words, but by one's whole being. That is the unforgivable sin — to be presented with Jesus as King and to willfully say "No, I will not serve." Short of that, all the chip implants and ID cards in the world aren't going to land anyone in Hell.
A Christian will know and refuse when the mark of the beast is offered and you're right, this aint it. Ah, but three years from now when we need a mark access the new hillary-care.....
Actually, Revelation 14:9 - 12 makes it pretty clear that anyone that takes the Mark of the Beast is dammed:
9 A third angel followed them and said in a loud voice: "If anyone worships the beast and his image and receives his mark on the forehead or on the hand,
10 he, too, will drink of the wine of God's fury, which has been poured full strength into the cup of his wrath. He will be tormented with burning sulfur in the presence of the holy angels and of the Lamb.
11 And the smoke of their torment rises for ever and ever. There is no rest day or night for those who worship the beast and his image, or for anyone who receives the mark of his name."
12 This calls for patient endurance on the part of the saints who obey God's commandments and remain faithful to Jesus.
One of the reasons that "the mark" gets a lot of press in Christendom -- taking "the mark" is too big of a risk to chance. I know I will never, under any circumstances, allow some one to implant anything into my right hand or forehead, tattoo anything there, or otherwise get "marked" permanently in those places.